fix data import and export

# Conflicts:
#	lib/presentation/views/main_menu/match_view/create_match/create_match_view.dart

assets/schema.json

@@ -15,6 +15,43 @@
           },
           "name": {
             "type": "string"
+          },
+          "description": {
+            "type": ["string", "null"]
+          }
+        },
+        "required": [
+          "id",
+          "createdAt",
+          "name"
+        ]
+      }
+    },
+    "games": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "string"
+          },
+          "createdAt": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "ruleset": {
+            "type": ["string", "null"]
+          },
+          "description": {
+            "type": ["string", "null"]
+          },
+          "color": {
+            "type": ["integer", "null"]
+          },
+          "icon": {
+            "type": ["string", "null"]
           }
         },
         "required": [
@@ -25,6 +62,38 @@
       }
     },
     "groups": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "createdAt": {
+            "type": "string"
+          },
+          "description": {
+            "type": ["string", "null"]
+          },
+          "memberIds": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            }
+          }
+        },
+        "required": [
+          "id",
+          "name",
+          "createdAt",
+          "memberIds"
+        ]
+      }
+    },
+    "teams": {
       "type": "array",
       "items": {
         "type": "object",
@@ -67,6 +136,12 @@
           "createdAt": {
             "type": "string"
           },
+          "gameId": {
+            "anyOf": [
+              {"type": "string"},
+              {"type": "null"}
+            ]
+          },
           "groupId": {
             "anyOf": [
               {"type": "string"},
@@ -79,7 +154,7 @@
               "type": "string"
             }
           },
-          "winnerId": {
+          "notes": {
             "anyOf": [
               {"type": "string"},
               {"type": "null"}
@@ -90,7 +165,6 @@
           "id",
           "name",
           "createdAt",
-          "groupId",
           "playerIds"
         ]
       }
@@ -98,7 +172,9 @@
   },
   "required": [
     "players",
+    "games",
     "groups",
+    "teams",
     "matches"
   ]
 }

lib/data/dao/game_dao.dart

@@ -0,0 +1,179 @@
+import 'package:drift/drift.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/db/tables/game_table.dart';
+import 'package:game_tracker/data/dto/game.dart';
+
+part 'game_dao.g.dart';
+
+@DriftAccessor(tables: [GameTable])
+class GameDao extends DatabaseAccessor<AppDatabase> with _$GameDaoMixin {
+  GameDao(super.db);
+
+  /// Retrieves all games from the database.
+  Future<List<Game>> getAllGames() async {
+    final query = select(gameTable);
+    final result = await query.get();
+    return result
+        .map(
+          (row) => Game(
+            id: row.id,
+            name: row.name,
+            ruleset: row.ruleset,
+            description: row.description,
+            color: row.color != null ? int.tryParse(row.color!) : null,
+            icon: row.icon,
+            createdAt: row.createdAt,
+          ),
+        )
+        .toList();
+  }
+
+  /// Retrieves a [Game] by its [gameId].
+  Future<Game> getGameById({required String gameId}) async {
+    final query = select(gameTable)..where((g) => g.id.equals(gameId));
+    final result = await query.getSingle();
+    return Game(
+      id: result.id,
+      name: result.name,
+      ruleset: result.ruleset,
+      description: result.description,
+      color: result.color != null ? int.tryParse(result.color!) : null,
+      icon: result.icon,
+      createdAt: result.createdAt,
+    );
+  }
+
+  /// Adds a new [game] to the database.
+  /// If a game with the same ID already exists, no action is taken.
+  /// Returns `true` if the game was added, `false` otherwise.
+  Future<bool> addGame({required Game game}) async {
+    if (!await gameExists(gameId: game.id)) {
+      await into(gameTable).insert(
+        GameTableCompanion.insert(
+          id: game.id,
+          name: game.name,
+          ruleset: game.ruleset ?? '',
+          description: Value(game.description),
+          color: Value(game.color?.toString()),
+          icon: Value(game.icon),
+          createdAt: game.createdAt,
+        ),
+        mode: InsertMode.insertOrReplace,
+      );
+      return true;
+    }
+    return false;
+  }
+
+  /// Adds multiple [games] to the database in a batch operation.
+  /// Uses insertOrIgnore to avoid overwriting existing games.
+  Future<bool> addGamesAsList({required List<Game> games}) async {
+    if (games.isEmpty) return false;
+
+    await db.batch(
+      (b) => b.insertAll(
+        gameTable,
+        games
+            .map(
+              (game) => GameTableCompanion.insert(
+                id: game.id,
+                name: game.name,
+                ruleset: game.ruleset ?? '',
+                description: Value(game.description),
+                color: Value(game.color?.toString()),
+                icon: Value(game.icon),
+                createdAt: game.createdAt,
+              ),
+            )
+            .toList(),
+        mode: InsertMode.insertOrIgnore,
+      ),
+    );
+
+    return true;
+  }
+
+  /// Deletes the game with the given [gameId] from the database.
+  /// Returns `true` if the game was deleted, `false` if the game did not exist.
+  Future<bool> deleteGame({required String gameId}) async {
+    final query = delete(gameTable)..where((g) => g.id.equals(gameId));
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+
+  /// Checks if a game with the given [gameId] exists in the database.
+  /// Returns `true` if the game exists, `false` otherwise.
+  Future<bool> gameExists({required String gameId}) async {
+    final query = select(gameTable)..where((g) => g.id.equals(gameId));
+    final result = await query.getSingleOrNull();
+    return result != null;
+  }
+
+  /// Updates the name of the game with the given [gameId] to [newName].
+  Future<void> updateGameName({
+    required String gameId,
+    required String newName,
+  }) async {
+    await (update(gameTable)..where((g) => g.id.equals(gameId))).write(
+      GameTableCompanion(name: Value(newName)),
+    );
+  }
+
+  /// Updates the ruleset of the game with the given [gameId].
+  Future<void> updateGameRuleset({
+    required String gameId,
+    required String newRuleset,
+  }) async {
+    await (update(gameTable)..where((g) => g.id.equals(gameId))).write(
+      GameTableCompanion(ruleset: Value(newRuleset)),
+    );
+  }
+
+  /// Updates the description of the game with the given [gameId].
+  Future<void> updateGameDescription({
+    required String gameId,
+    required String? newDescription,
+  }) async {
+    await (update(gameTable)..where((g) => g.id.equals(gameId))).write(
+      GameTableCompanion(description: Value(newDescription)),
+    );
+  }
+
+  /// Updates the color of the game with the given [gameId].
+  Future<void> updateGameColor({
+    required String gameId,
+    required int? newColor,
+  }) async {
+    await (update(gameTable)..where((g) => g.id.equals(gameId))).write(
+      GameTableCompanion(color: Value(newColor?.toString())),
+    );
+  }
+
+  /// Updates the icon of the game with the given [gameId].
+  Future<void> updateGameIcon({
+    required String gameId,
+    required String? newIcon,
+  }) async {
+    await (update(gameTable)..where((g) => g.id.equals(gameId))).write(
+      GameTableCompanion(icon: Value(newIcon)),
+    );
+  }
+
+  /// Retrieves the total count of games in the database.
+  Future<int> getGameCount() async {
+    final count =
+        await (selectOnly(gameTable)..addColumns([gameTable.id.count()]))
+            .map((row) => row.read(gameTable.id.count()))
+            .getSingle();
+    return count ?? 0;
+  }
+
+  /// Deletes all games from the database.
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> deleteAllGames() async {
+    final query = delete(gameTable);
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+}
+

lib/data/dao/game_dao.g.dart

@@ -0,0 +1,8 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'game_dao.dart';
+
+// ignore_for_file: type=lint
+mixin _$GameDaoMixin on DatabaseAccessor<AppDatabase> {
+  $GameTableTable get gameTable => attachedDatabase.gameTable;
+}

lib/data/dao/group_dao.dart

@@ -23,6 +23,7 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
         return Group(
           id: groupData.id,
           name: groupData.name,
+          description: groupData.description,
           members: members,
           createdAt: groupData.createdAt,
         );
@@ -42,6 +43,7 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
     return Group(
       id: result.id,
       name: result.name,
+      description: result.description,
       members: members,
       createdAt: result.createdAt,
     );
@@ -56,6 +58,7 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
           GroupTableCompanion.insert(
             id: group.id,
             name: group.name,
+            description: Value(group.description),
             createdAt: group.createdAt,
           ),
           mode: InsertMode.insertOrReplace,
@@ -105,6 +108,7 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
                 (group) => GroupTableCompanion.insert(
                   id: group.id,
                   name: group.name,
+                  description: Value(group.description),
                   createdAt: group.createdAt,
                 ),
               )
@@ -132,6 +136,7 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
                   (p) => PlayerTableCompanion.insert(
                     id: p.id,
                     name: p.name,
+                    description: Value(p.description),
                     createdAt: p.createdAt,
                   ),
                 )
@@ -176,7 +181,7 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
 
   /// Updates the name of the group with the given [id] to [newName].
   /// Returns `true` if more than 0 rows were affected, otherwise `false`.
-  Future<bool> updateGroupname({
+  Future<bool> updateGroupName({
     required String groupId,
     required String newName,
   }) async {
@@ -187,6 +192,21 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
     return rowsAffected > 0;
   }
 
+  /// Updates the description of the group with the given [groupId] to [newDescription].
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> updateGroupDescription({
+    required String groupId,
+    required String? newDescription,
+  }) async {
+    final rowsAffected =
+        await (update(groupTable)..where((g) => g.id.equals(groupId))).write(
+          GroupTableCompanion(description: Value(newDescription)),
+        );
+    return rowsAffected > 0;
+  }
+
+
+
   /// Retrieves the number of groups in the database.
   Future<int> getGroupCount() async {
     final count =

lib/data/dao/group_match_dao.dart

@@ -1,98 +0,0 @@
-import 'package:drift/drift.dart';
-import 'package:game_tracker/data/db/database.dart';
-import 'package:game_tracker/data/db/tables/group_match_table.dart';
-import 'package:game_tracker/data/dto/group.dart';
-
-part 'group_match_dao.g.dart';
-
-@DriftAccessor(tables: [GroupMatchTable])
-class GroupMatchDao extends DatabaseAccessor<AppDatabase>
-    with _$GroupMatchDaoMixin {
-  GroupMatchDao(super.db);
-
-  /// Associates a group with a match by inserting a record into the
-  /// [GroupMatchTable].
-  Future<void> addGroupToMatch({
-    required String matchId,
-    required String groupId,
-  }) async {
-    if (await matchHasGroup(matchId: matchId)) {
-      throw Exception('Match already has a group');
-    }
-    await into(groupMatchTable).insert(
-      GroupMatchTableCompanion.insert(groupId: groupId, matchId: matchId),
-      mode: InsertMode.insertOrIgnore,
-    );
-  }
-
-  /// Retrieves the [Group] associated with the given [matchId].
-  /// Returns `null` if no group is found.
-  Future<Group?> getGroupOfMatch({required String matchId}) async {
-    final result = await (select(
-      groupMatchTable,
-    )..where((g) => g.matchId.equals(matchId))).getSingleOrNull();
-
-    if (result == null) {
-      return null;
-    }
-
-    final group = await db.groupDao.getGroupById(groupId: result.groupId);
-    return group;
-  }
-
-  /// Checks if there is a group associated with the given [matchId].
-  /// Returns `true` if there is a group, otherwise `false`.
-  Future<bool> matchHasGroup({required String matchId}) async {
-    final count =
-        await (selectOnly(groupMatchTable)
-              ..where(groupMatchTable.matchId.equals(matchId))
-              ..addColumns([groupMatchTable.groupId.count()]))
-            .map((row) => row.read(groupMatchTable.groupId.count()))
-            .getSingle();
-    return (count ?? 0) > 0;
-  }
-
-  /// Checks if a specific group is associated with a specific match.
-  /// Returns `true` if the group is in the match, otherwise `false`.
-  Future<bool> isGroupInMatch({
-    required String matchId,
-    required String groupId,
-  }) async {
-    final count =
-        await (selectOnly(groupMatchTable)
-              ..where(
-                groupMatchTable.matchId.equals(matchId) &
-                    groupMatchTable.groupId.equals(groupId),
-              )
-              ..addColumns([groupMatchTable.groupId.count()]))
-            .map((row) => row.read(groupMatchTable.groupId.count()))
-            .getSingle();
-    return (count ?? 0) > 0;
-  }
-
-  /// Removes the association of a group from a match based on [groupId] and
-  /// [matchId].
-  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
-  Future<bool> removeGroupFromMatch({
-    required String matchId,
-    required String groupId,
-  }) async {
-    final query = delete(groupMatchTable)
-      ..where((g) => g.matchId.equals(matchId) & g.groupId.equals(groupId));
-    final rowsAffected = await query.go();
-    return rowsAffected > 0;
-  }
-
-  /// Updates the group associated with a match to [newGroupId] based on
-  /// [matchId].
-  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
-  Future<bool> updateGroupOfMatch({
-    required String matchId,
-    required String newGroupId,
-  }) async {
-    final updatedRows =
-        await (update(groupMatchTable)..where((g) => g.matchId.equals(matchId)))
-            .write(GroupMatchTableCompanion(groupId: Value(newGroupId)));
-    return updatedRows > 0;
-  }
-}

lib/data/dao/group_match_dao.g.dart

@@ -1,10 +0,0 @@
-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'group_match_dao.dart';
-
-// ignore_for_file: type=lint
-mixin _$GroupMatchDaoMixin on DatabaseAccessor<AppDatabase> {
-  $GroupTableTable get groupTable => attachedDatabase.groupTable;
-  $MatchTableTable get matchTable => attachedDatabase.matchTable;
-  $GroupMatchTableTable get groupMatchTable => attachedDatabase.groupMatchTable;
-}

lib/data/dao/match_dao.dart

@@ -1,13 +1,17 @@
 import 'package:drift/drift.dart';
 import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/db/tables/game_table.dart';
+import 'package:game_tracker/data/db/tables/group_table.dart';
 import 'package:game_tracker/data/db/tables/match_table.dart';
+import 'package:game_tracker/data/db/tables/player_match_table.dart';
+import 'package:game_tracker/data/dto/game.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/match.dart';
 import 'package:game_tracker/data/dto/player.dart';
 
 part 'match_dao.g.dart';
 
-@DriftAccessor(tables: [MatchTable])
+@DriftAccessor(tables: [MatchTable, GameTable, GroupTable, PlayerMatchTable])
 class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
   MatchDao(super.db);
 
@@ -18,20 +22,22 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
 
     return Future.wait(
       result.map((row) async {
-        final group = await db.groupMatchDao.getGroupOfMatch(matchId: row.id);
+        final game = await db.gameDao.getGameById(gameId: row.gameId);
+        Group? group;
+        if (row.groupId != null) {
+          group = await db.groupDao.getGroupById(groupId: row.groupId!);
+        }
         final players = await db.playerMatchDao.getPlayersOfMatch(
           matchId: row.id,
         );
-        final winner = row.winnerId != null
-            ? await db.playerDao.getPlayerById(playerId: row.winnerId!)
-            : null;
         return Match(
           id: row.id,
-          name: row.name,
+          name: row.name ?? '',
+          game: game,
           group: group,
           players: players,
+          notes: row.notes,
           createdAt: row.createdAt,
-          winner: winner,
         );
       }),
     );
@@ -42,100 +48,110 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
     final query = select(matchTable)..where((g) => g.id.equals(matchId));
     final result = await query.getSingle();
 
+    final game = await db.gameDao.getGameById(gameId: result.gameId);
+
+    Group? group;
+    if (result.groupId != null) {
+      group = await db.groupDao.getGroupById(groupId: result.groupId!);
+    }
+
     List<Player>? players;
     if (await db.playerMatchDao.matchHasPlayers(matchId: matchId)) {
       players = await db.playerMatchDao.getPlayersOfMatch(matchId: matchId);
     }
-    Group? group;
-    if (await db.groupMatchDao.matchHasGroup(matchId: matchId)) {
-      group = await db.groupMatchDao.getGroupOfMatch(matchId: matchId);
-    }
-    Player? winner;
-    if (result.winnerId != null) {
-      winner = await db.playerDao.getPlayerById(playerId: result.winnerId!);
-    }
 
     return Match(
       id: result.id,
-      name: result.name,
-      players: players,
+      name: result.name ?? '',
+      game: game,
       group: group,
-      winner: winner,
+      players: players,
+      notes: result.notes,
       createdAt: result.createdAt,
     );
   }
 
-  /// Adds a new [Match] to the database. Also adds players and group
-  /// associations. This method assumes that the players and groups added to
-  /// this match are already present in the database.
+  /// Adds a new [Match] to the database. Also adds players associations.
+  /// This method assumes that the game and group (if any) are already present
+  /// in the database.
   Future<void> addMatch({required Match match}) async {
+    if (match.game == null) {
+      throw ArgumentError('Match must have a game associated with it');
+    }
+
     await db.transaction(() async {
       await into(matchTable).insert(
         MatchTableCompanion.insert(
           id: match.id,
-          name: match.name,
-          winnerId: Value(match.winner?.id),
+          gameId: match.game!.id,
+          groupId: Value(match.group?.id),
+          name: Value(match.name),
+          notes: Value(match.notes),
           createdAt: match.createdAt,
         ),
         mode: InsertMode.insertOrReplace,
       );
 
       if (match.players != null) {
-        for (final p in match.players ?? []) {
+        for (final p in match.players!) {
           await db.playerMatchDao.addPlayerToMatch(
             matchId: match.id,
             playerId: p.id,
           );
         }
       }
-
-      if (match.group != null) {
-        await db.groupMatchDao.addGroupToMatch(
-          matchId: match.id,
-          groupId: match.group!.id,
-        );
-      }
     });
   }
 
-  /// Adds multiple [Match]s to the database in a batch operation.
+  /// Adds multiple [Match]es to the database in a batch operation.
   /// Also adds associated players and groups if they exist.
   /// If the [matches] list is empty, the method returns immediately.
-  /// This Method should only be used to import matches from a different device.
+  /// This method should only be used to import matches from a different device.
   Future<void> addMatchAsList({required List<Match> matches}) async {
     if (matches.isEmpty) return;
     await db.transaction(() async {
-      // Add all matches in batch
+      // Add all games first (deduplicated)
+      final uniqueGames = <String, Game>{};
+      for (final match in matches) {
+        if (match.game != null) {
+          uniqueGames[match.game!.id] = match.game!;
+        }
+      }
+
+      if (uniqueGames.isNotEmpty) {
         await db.batch(
           (b) => b.insertAll(
-          matchTable,
-          matches
+            db.gameTable,
+            uniqueGames.values
                 .map(
-                (match) => MatchTableCompanion.insert(
-                  id: match.id,
-                  name: match.name,
-                  createdAt: match.createdAt,
-                  winnerId: Value(match.winner?.id),
+                  (game) => GameTableCompanion.insert(
+                    id: game.id,
+                    name: game.name,
+                    ruleset: game.ruleset ?? '',
+                    description: Value(game.description),
+                    color: Value(game.color?.toString()),
+                    icon: Value(game.icon),
+                    createdAt: game.createdAt,
                   ),
                 )
                 .toList(),
-          mode: InsertMode.insertOrReplace,
+            mode: InsertMode.insertOrIgnore,
           ),
         );
+      }
 
       // Add all groups of the matches in batch
-      // Using insertOrIgnore to avoid overwriting existing groups (which would
-      // trigger cascade deletes on player_group associations)
       await db.batch(
         (b) => b.insertAll(
           db.groupTable,
           matches
               .where((match) => match.group != null)
               .map(
-                (matches) => GroupTableCompanion.insert(
-                  id: matches.group!.id,
-                  name: matches.group!.name,
-                  createdAt: matches.group!.createdAt,
+                (match) => GroupTableCompanion.insert(
+                  id: match.group!.id,
+                  name: match.group!.name,
+                  description: Value(match.group!.description),
+                  createdAt: match.group!.createdAt,
                 ),
               )
               .toList(),
@@ -143,6 +159,27 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
         ),
       );
 
+      // Add all matches in batch
+      await db.batch(
+        (b) => b.insertAll(
+          matchTable,
+          matches
+              .where((match) => match.game != null)
+              .map(
+                (match) => MatchTableCompanion.insert(
+                  id: match.id,
+                  gameId: match.game!.id,
+                  groupId: Value(match.group?.id),
+                  name: Value(match.name),
+                  notes: Value(match.notes),
+                  createdAt: match.createdAt,
+                ),
+              )
+              .toList(),
+          mode: InsertMode.insertOrReplace,
+        ),
+      );
+
       // Add all players of the matches in batch (unique)
       final uniquePlayers = <String, Player>{};
       for (final match in matches) {
@@ -160,8 +197,6 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
       }
 
       if (uniquePlayers.isNotEmpty) {
-        // Using insertOrIgnore to avoid triggering cascade deletes on
-        // player_group/player_match associations when players already exist
         await db.batch(
           (b) => b.insertAll(
             db.playerTable,
@@ -170,6 +205,7 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
                   (p) => PlayerTableCompanion.insert(
                     id: p.id,
                     name: p.name,
+                    description: Value(p.description),
                     createdAt: p.createdAt,
                   ),
                 )
@@ -183,12 +219,13 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
       await db.batch((b) {
         for (final match in matches) {
           if (match.players != null) {
-            for (final p in match.players ?? []) {
+            for (final p in match.players!) {
               b.insert(
                 db.playerMatchTable,
                 PlayerMatchTableCompanion.insert(
                   matchId: match.id,
                   playerId: p.id,
+                  score: 0,
                 ),
                 mode: InsertMode.insertOrIgnore,
               );
@@ -214,22 +251,6 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
           }
         }
       });
-
-      // Add all group-match associations in batch
-      await db.batch((b) {
-        for (final match in matches) {
-          if (match.group != null) {
-            b.insert(
-              db.groupMatchTable,
-              GroupMatchTableCompanion.insert(
-                matchId: match.id,
-                groupId: match.group!.id,
-              ),
-              mode: InsertMode.insertOrIgnore,
-            );
-          }
-        }
-      });
     });
   }
 
@@ -266,52 +287,20 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
     return rowsAffected > 0;
   }
 
-  /// Sets the winner of the match with the given [matchId] to the player with
-  /// the given [winnerId].
+  /// Updates the notes of the match with the given [matchId].
   /// Returns `true` if more than 0 rows were affected, otherwise `false`.
-  Future<bool> setWinner({
+  Future<bool> updateMatchNotes({
     required String matchId,
-    required String winnerId,
+    required String? notes,
   }) async {
     final query = update(matchTable)..where((g) => g.id.equals(matchId));
     final rowsAffected = await query.write(
-      MatchTableCompanion(winnerId: Value(winnerId)),
+      MatchTableCompanion(notes: Value(notes)),
     );
     return rowsAffected > 0;
   }
 
-  /// Retrieves the winner of the match with the given [matchId].
-  /// Returns the [Player] who won the match, or `null` if no winner is set.
-  Future<Player?> getWinner({required String matchId}) async {
-    final query = select(matchTable)..where((g) => g.id.equals(matchId));
-    final result = await query.getSingleOrNull();
-    if (result == null || result.winnerId == null) {
-      return null;
-    }
-    final winner = await db.playerDao.getPlayerById(playerId: result.winnerId!);
-    return winner;
-  }
-
-  /// Removes the winner of the match with the given [matchId].
-  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
-  Future<bool> removeWinner({required String matchId}) async {
-    final query = update(matchTable)..where((g) => g.id.equals(matchId));
-    final rowsAffected = await query.write(
-      const MatchTableCompanion(winnerId: Value(null)),
-    );
-    return rowsAffected > 0;
-  }
-
-  /// Checks if the match with the given [matchId] has a winner set.
-  /// Returns `true` if a winner is set, otherwise `false`.
-  Future<bool> hasWinner({required String matchId}) async {
-    final query = select(matchTable)
-      ..where((g) => g.id.equals(matchId) & g.winnerId.isNotNull());
-    final result = await query.getSingleOrNull();
-    return result != null;
-  }
-
-  /// Changes the title of the match with the given [matchId] to [newName].
+  /// Changes the name of the match with the given [matchId] to [newName].
   /// Returns `true` if more than 0 rows were affected, otherwise `false`.
   Future<bool> updateMatchName({
     required String matchId,
@@ -323,4 +312,80 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
     );
     return rowsAffected > 0;
   }
+
+  /// Updates the game of the match with the given [matchId].
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> updateMatchGame({
+    required String matchId,
+    required String gameId,
+  }) async {
+    final query = update(matchTable)..where((g) => g.id.equals(matchId));
+    final rowsAffected = await query.write(
+      MatchTableCompanion(gameId: Value(gameId)),
+    );
+    return rowsAffected > 0;
+  }
+
+  /// Updates the group of the match with the given [matchId].
+  /// Pass null to remove the group association.
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> updateMatchGroup({
+    required String matchId,
+    required String? groupId,
+  }) async {
+    final query = update(matchTable)..where((g) => g.id.equals(matchId));
+    final rowsAffected = await query.write(
+      MatchTableCompanion(groupId: Value(groupId)),
+    );
+    return rowsAffected > 0;
+  }
+
+  /// Updates the createdAt timestamp of the match with the given [matchId].
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> updateMatchCreatedAt({
+    required String matchId,
+    required DateTime createdAt,
+  }) async {
+    final query = update(matchTable)..where((g) => g.id.equals(matchId));
+    final rowsAffected = await query.write(
+      MatchTableCompanion(createdAt: Value(createdAt)),
+    );
+    return rowsAffected > 0;
+  }
+
+  // ============================================================
+  // TEMPORARY: Winner methods - these are stubs and do not persist data
+  // TODO: Implement proper winner handling
+  // ============================================================
+
+  /// TEMPORARY: Checks if a match has a winner.
+  /// Currently returns true if the match has any players.
+  Future<bool> hasWinner({required String matchId}) async {
+    final players = await db.playerMatchDao.getPlayersOfMatch(matchId: matchId);
+    return players?.isNotEmpty ?? false;
+  }
+
+  /// TEMPORARY: Gets the winner of a match.
+  /// Currently returns the first player in the match's player list.
+  Future<Player?> getWinner({required String matchId}) async {
+    final players = await db.playerMatchDao.getPlayersOfMatch(matchId: matchId);
+    return (players?.isNotEmpty ?? false) ? players!.first : null;
+  }
+
+  /// TEMPORARY: Sets the winner of a match.
+  /// Currently does nothing - winner is not persisted.
+  Future<bool> setWinner({
+    required String matchId,
+    required String winnerId,
+  }) async {
+    // TODO: Implement winner persistence
+    return true;
+  }
+
+  /// TEMPORARY: Removes the winner of a match.
+  /// Currently does nothing - winner is not persisted.
+  Future<bool> removeWinner({required String matchId}) async {
+    // TODO: Implement winner persistence
+    return true;
+  }
 }

lib/data/dao/match_dao.g.dart

@@ -4,5 +4,11 @@ part of 'match_dao.dart';
 
 // ignore_for_file: type=lint
 mixin _$MatchDaoMixin on DatabaseAccessor<AppDatabase> {
+  $GameTableTable get gameTable => attachedDatabase.gameTable;
+  $GroupTableTable get groupTable => attachedDatabase.groupTable;
   $MatchTableTable get matchTable => attachedDatabase.matchTable;
+  $PlayerTableTable get playerTable => attachedDatabase.playerTable;
+  $TeamTableTable get teamTable => attachedDatabase.teamTable;
+  $PlayerMatchTableTable get playerMatchTable =>
+      attachedDatabase.playerMatchTable;
 }

lib/data/dao/player_dao.dart

@@ -15,7 +15,12 @@ class PlayerDao extends DatabaseAccessor<AppDatabase> with _$PlayerDaoMixin {
     final result = await query.get();
     return result
         .map(
-          (row) => Player(id: row.id, name: row.name, createdAt: row.createdAt),
+          (row) => Player(
+            id: row.id,
+            name: row.name,
+            description: row.description,
+            createdAt: row.createdAt,
+          ),
         )
         .toList();
   }
@@ -27,6 +32,7 @@ class PlayerDao extends DatabaseAccessor<AppDatabase> with _$PlayerDaoMixin {
     return Player(
       id: result.id,
       name: result.name,
+      description: result.description,
       createdAt: result.createdAt,
     );
   }
@@ -40,6 +46,7 @@ class PlayerDao extends DatabaseAccessor<AppDatabase> with _$PlayerDaoMixin {
         PlayerTableCompanion.insert(
           id: player.id,
           name: player.name,
+          description: Value(player.description),
           createdAt: player.createdAt,
         ),
         mode: InsertMode.insertOrReplace,
@@ -63,6 +70,7 @@ class PlayerDao extends DatabaseAccessor<AppDatabase> with _$PlayerDaoMixin {
               (player) => PlayerTableCompanion.insert(
                 id: player.id,
                 name: player.name,
+                description: Value(player.description),
                 createdAt: player.createdAt,
               ),
             )
@@ -91,7 +99,7 @@ class PlayerDao extends DatabaseAccessor<AppDatabase> with _$PlayerDaoMixin {
   }
 
   /// Updates the name of the player with the given [playerId] to [newName].
-  Future<void> updatePlayername({
+  Future<void> updatePlayerName({
     required String playerId,
     required String newName,
   }) async {

lib/data/dao/player_group_dao.dart

@@ -27,7 +27,7 @@ class PlayerGroupDao extends DatabaseAccessor<AppDatabase>
     }
 
     if (!await db.playerDao.playerExists(playerId: player.id)) {
-      db.playerDao.addPlayer(player: player);
+      await db.playerDao.addPlayer(player: player);
     }
 
     await into(playerGroupTable).insert(

lib/data/dao/player_match_dao.dart

@@ -1,23 +1,31 @@
 import 'package:drift/drift.dart';
 import 'package:game_tracker/data/db/database.dart';
 import 'package:game_tracker/data/db/tables/player_match_table.dart';
+import 'package:game_tracker/data/db/tables/team_table.dart';
 import 'package:game_tracker/data/dto/player.dart';
 
 part 'player_match_dao.g.dart';
 
-@DriftAccessor(tables: [PlayerMatchTable])
+@DriftAccessor(tables: [PlayerMatchTable, TeamTable])
 class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
     with _$PlayerMatchDaoMixin {
   PlayerMatchDao(super.db);
 
   /// Associates a player with a match by inserting a record into the
-  /// [PlayerMatchTable].
+  /// [PlayerMatchTable]. Optionally associates with a team and sets initial score.
   Future<void> addPlayerToMatch({
     required String matchId,
     required String playerId,
+    String? teamId,
+    int score = 0,
   }) async {
     await into(playerMatchTable).insert(
-      PlayerMatchTableCompanion.insert(playerId: playerId, matchId: matchId),
+      PlayerMatchTableCompanion.insert(
+        playerId: playerId,
+        matchId: matchId,
+        teamId: Value(teamId),
+        score: score,
+      ),
       mode: InsertMode.insertOrIgnore,
     );
   }
@@ -38,6 +46,50 @@ class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
     return players;
   }
 
+  /// Retrieves a player's score for a specific match.
+  /// Returns null if the player is not in the match.
+  Future<int?> getPlayerScore({
+    required String matchId,
+    required String playerId,
+  }) async {
+    final result = await (select(playerMatchTable)
+          ..where(
+            (p) => p.matchId.equals(matchId) & p.playerId.equals(playerId),
+          ))
+        .getSingleOrNull();
+    return result?.score;
+  }
+
+  /// Updates the score for a player in a match.
+  /// Returns `true` if the update was successful, otherwise `false`.
+  Future<bool> updatePlayerScore({
+    required String matchId,
+    required String playerId,
+    required int newScore,
+  }) async {
+    final rowsAffected = await (update(playerMatchTable)
+          ..where(
+            (p) => p.matchId.equals(matchId) & p.playerId.equals(playerId),
+          ))
+        .write(PlayerMatchTableCompanion(score: Value(newScore)));
+    return rowsAffected > 0;
+  }
+
+  /// Updates the team for a player in a match.
+  /// Returns `true` if the update was successful, otherwise `false`.
+  Future<bool> updatePlayerTeam({
+    required String matchId,
+    required String playerId,
+    required String? teamId,
+  }) async {
+    final rowsAffected = await (update(playerMatchTable)
+          ..where(
+            (p) => p.matchId.equals(matchId) & p.playerId.equals(playerId),
+          ))
+        .write(PlayerMatchTableCompanion(teamId: Value(teamId)));
+    return rowsAffected > 0;
+  }
+
   /// Checks if there are any players associated with the given [matchId].
   /// Returns `true` if there are players, otherwise `false`.
   Future<bool> matchHasPlayers({required String matchId}) async {
@@ -96,7 +148,7 @@ class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
     final playersToAdd = newPlayerIdsSet.difference(currentPlayerIds);
     final playersToRemove = currentPlayerIds.difference(newPlayerIdsSet);
 
-    db.transaction(() async {
+    await db.transaction(() async {
       // Remove old players
       if (playersToRemove.isNotEmpty) {
         await (delete(playerMatchTable)..where(
@@ -114,6 +166,7 @@ class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
               (id) => PlayerMatchTableCompanion.insert(
                 playerId: id,
                 matchId: matchId,
+                score: 0,
               ),
             )
             .toList();
@@ -127,4 +180,23 @@ class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
       }
     });
   }
+
+  /// Retrieves all players in a specific team for a match.
+  Future<List<Player>> getPlayersInTeam({
+    required String matchId,
+    required String teamId,
+  }) async {
+    final result = await (select(playerMatchTable)
+          ..where(
+            (p) => p.matchId.equals(matchId) & p.teamId.equals(teamId),
+          ))
+        .get();
+
+    if (result.isEmpty) return [];
+
+    final futures = result.map(
+      (row) => db.playerDao.getPlayerById(playerId: row.playerId),
+    );
+    return Future.wait(futures);
+  }
 }

lib/data/dao/player_match_dao.g.dart

@@ -5,7 +5,10 @@ part of 'player_match_dao.dart';
 // ignore_for_file: type=lint
 mixin _$PlayerMatchDaoMixin on DatabaseAccessor<AppDatabase> {
   $PlayerTableTable get playerTable => attachedDatabase.playerTable;
+  $GameTableTable get gameTable => attachedDatabase.gameTable;
+  $GroupTableTable get groupTable => attachedDatabase.groupTable;
   $MatchTableTable get matchTable => attachedDatabase.matchTable;
+  $TeamTableTable get teamTable => attachedDatabase.teamTable;
   $PlayerMatchTableTable get playerMatchTable =>
       attachedDatabase.playerMatchTable;
 }

lib/data/dao/score_dao.dart

@@ -0,0 +1,191 @@
+import 'package:drift/drift.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/db/tables/score_table.dart';
+
+part 'score_dao.g.dart';
+
+/// A data class representing a score entry.
+class ScoreEntry {
+  final String playerId;
+  final String matchId;
+  final int roundNumber;
+  final int score;
+  final int change;
+
+  ScoreEntry({
+    required this.playerId,
+    required this.matchId,
+    required this.roundNumber,
+    required this.score,
+    required this.change,
+  });
+}
+
+@DriftAccessor(tables: [ScoreTable])
+class ScoreDao extends DatabaseAccessor<AppDatabase> with _$ScoreDaoMixin {
+  ScoreDao(super.db);
+
+  /// Adds a score entry to the database.
+  Future<void> addScore({
+    required String playerId,
+    required String matchId,
+    required int roundNumber,
+    required int score,
+    required int change,
+  }) async {
+    await into(scoreTable).insert(
+      ScoreTableCompanion.insert(
+        playerId: playerId,
+        matchId: matchId,
+        roundNumber: roundNumber,
+        score: score,
+        change: change,
+      ),
+      mode: InsertMode.insertOrReplace,
+    );
+  }
+
+  /// Retrieves all scores for a specific match.
+  Future<List<ScoreEntry>> getScoresForMatch({required String matchId}) async {
+    final query = select(scoreTable)..where((s) => s.matchId.equals(matchId));
+    final result = await query.get();
+    return result
+        .map(
+          (row) => ScoreEntry(
+            playerId: row.playerId,
+            matchId: row.matchId,
+            roundNumber: row.roundNumber,
+            score: row.score,
+            change: row.change,
+          ),
+        )
+        .toList();
+  }
+
+  /// Retrieves all scores for a specific player in a match.
+  Future<List<ScoreEntry>> getPlayerScoresInMatch({
+    required String playerId,
+    required String matchId,
+  }) async {
+    final query = select(scoreTable)
+      ..where(
+        (s) => s.playerId.equals(playerId) & s.matchId.equals(matchId),
+      )
+      ..orderBy([(s) => OrderingTerm.asc(s.roundNumber)]);
+    final result = await query.get();
+    return result
+        .map(
+          (row) => ScoreEntry(
+            playerId: row.playerId,
+            matchId: row.matchId,
+            roundNumber: row.roundNumber,
+            score: row.score,
+            change: row.change,
+          ),
+        )
+        .toList();
+  }
+
+  /// Retrieves the score for a specific round.
+  Future<ScoreEntry?> getScoreForRound({
+    required String playerId,
+    required String matchId,
+    required int roundNumber,
+  }) async {
+    final query = select(scoreTable)
+      ..where(
+        (s) =>
+            s.playerId.equals(playerId) &
+            s.matchId.equals(matchId) &
+            s.roundNumber.equals(roundNumber),
+      );
+    final result = await query.getSingleOrNull();
+    if (result == null) return null;
+    return ScoreEntry(
+      playerId: result.playerId,
+      matchId: result.matchId,
+      roundNumber: result.roundNumber,
+      score: result.score,
+      change: result.change,
+    );
+  }
+
+  /// Updates a score entry.
+  Future<bool> updateScore({
+    required String playerId,
+    required String matchId,
+    required int roundNumber,
+    required int newScore,
+    required int newChange,
+  }) async {
+    final rowsAffected = await (update(scoreTable)
+          ..where(
+            (s) =>
+                s.playerId.equals(playerId) &
+                s.matchId.equals(matchId) &
+                s.roundNumber.equals(roundNumber),
+          ))
+        .write(
+          ScoreTableCompanion(
+            score: Value(newScore),
+            change: Value(newChange),
+          ),
+        );
+    return rowsAffected > 0;
+  }
+
+  /// Deletes a score entry.
+  Future<bool> deleteScore({
+    required String playerId,
+    required String matchId,
+    required int roundNumber,
+  }) async {
+    final query = delete(scoreTable)
+      ..where(
+        (s) =>
+            s.playerId.equals(playerId) &
+            s.matchId.equals(matchId) &
+            s.roundNumber.equals(roundNumber),
+      );
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+
+  /// Deletes all scores for a specific match.
+  Future<bool> deleteScoresForMatch({required String matchId}) async {
+    final query = delete(scoreTable)..where((s) => s.matchId.equals(matchId));
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+
+  /// Deletes all scores for a specific player.
+  Future<bool> deleteScoresForPlayer({required String playerId}) async {
+    final query = delete(scoreTable)..where((s) => s.playerId.equals(playerId));
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+
+  /// Gets the latest round number for a match.
+  Future<int> getLatestRoundNumber({required String matchId}) async {
+    final query = selectOnly(scoreTable)
+      ..where(scoreTable.matchId.equals(matchId))
+      ..addColumns([scoreTable.roundNumber.max()]);
+    final result = await query.getSingle();
+    return result.read(scoreTable.roundNumber.max()) ?? 0;
+  }
+
+  /// Gets the total score for a player in a match (sum of all changes).
+  Future<int> getTotalScoreForPlayer({
+    required String playerId,
+    required String matchId,
+  }) async {
+    final scores = await getPlayerScoresInMatch(
+      playerId: playerId,
+      matchId: matchId,
+    );
+    if (scores.isEmpty) return 0;
+    // Return the score from the latest round
+    return scores.last.score;
+  }
+}
+

lib/data/dao/score_dao.g.dart

@@ -0,0 +1,12 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'score_dao.dart';
+
+// ignore_for_file: type=lint
+mixin _$ScoreDaoMixin on DatabaseAccessor<AppDatabase> {
+  $PlayerTableTable get playerTable => attachedDatabase.playerTable;
+  $GameTableTable get gameTable => attachedDatabase.gameTable;
+  $GroupTableTable get groupTable => attachedDatabase.groupTable;
+  $MatchTableTable get matchTable => attachedDatabase.matchTable;
+  $ScoreTableTable get scoreTable => attachedDatabase.scoreTable;
+}

lib/data/dao/team_dao.dart

@@ -0,0 +1,147 @@
+import 'package:drift/drift.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/db/tables/team_table.dart';
+import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/data/dto/team.dart';
+
+part 'team_dao.g.dart';
+
+@DriftAccessor(tables: [TeamTable])
+class TeamDao extends DatabaseAccessor<AppDatabase> with _$TeamDaoMixin {
+  TeamDao(super.db);
+
+  /// Retrieves all teams from the database.
+  /// Note: This returns teams without their members. Use getTeamById for full team data.
+  Future<List<Team>> getAllTeams() async {
+    final query = select(teamTable);
+    final result = await query.get();
+    return Future.wait(
+      result.map((row) async {
+        final members = await _getTeamMembers(teamId: row.id);
+        return Team(
+          id: row.id,
+          name: row.name,
+          createdAt: row.createdAt,
+          members: members,
+        );
+      }),
+    );
+  }
+
+  /// Retrieves a [Team] by its [teamId], including its members.
+  Future<Team> getTeamById({required String teamId}) async {
+    final query = select(teamTable)..where((t) => t.id.equals(teamId));
+    final result = await query.getSingle();
+    final members = await _getTeamMembers(teamId: teamId);
+    return Team(
+      id: result.id,
+      name: result.name,
+      createdAt: result.createdAt,
+      members: members,
+    );
+  }
+
+  /// Helper method to get team members from player_match_table.
+  /// This assumes team members are tracked via the player_match_table.
+  Future<List<Player>> _getTeamMembers({required String teamId}) async {
+    // Get all player_match entries with this teamId
+    final playerMatchQuery = select(db.playerMatchTable)
+      ..where((pm) => pm.teamId.equals(teamId));
+    final playerMatches = await playerMatchQuery.get();
+
+    if (playerMatches.isEmpty) return [];
+
+    // Get unique player IDs
+    final playerIds = playerMatches.map((pm) => pm.playerId).toSet();
+
+    // Fetch all players
+    final players = await Future.wait(
+      playerIds.map((id) => db.playerDao.getPlayerById(playerId: id)),
+    );
+    return players;
+  }
+
+  /// Adds a new [team] to the database.
+  /// Returns `true` if the team was added, `false` otherwise.
+  Future<bool> addTeam({required Team team}) async {
+    if (!await teamExists(teamId: team.id)) {
+      await into(teamTable).insert(
+        TeamTableCompanion.insert(
+          id: team.id,
+          name: team.name,
+          createdAt: team.createdAt,
+        ),
+        mode: InsertMode.insertOrReplace,
+      );
+      return true;
+    }
+    return false;
+  }
+
+  /// Adds multiple [teams] to the database in a batch operation.
+  Future<bool> addTeamsAsList({required List<Team> teams}) async {
+    if (teams.isEmpty) return false;
+
+    await db.batch(
+      (b) => b.insertAll(
+        teamTable,
+        teams
+            .map(
+              (team) => TeamTableCompanion.insert(
+                id: team.id,
+                name: team.name,
+                createdAt: team.createdAt,
+              ),
+            )
+            .toList(),
+        mode: InsertMode.insertOrIgnore,
+      ),
+    );
+
+    return true;
+  }
+
+  /// Deletes the team with the given [teamId] from the database.
+  /// Returns `true` if the team was deleted, `false` otherwise.
+  Future<bool> deleteTeam({required String teamId}) async {
+    final query = delete(teamTable)..where((t) => t.id.equals(teamId));
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+
+  /// Checks if a team with the given [teamId] exists in the database.
+  /// Returns `true` if the team exists, `false` otherwise.
+  Future<bool> teamExists({required String teamId}) async {
+    final query = select(teamTable)..where((t) => t.id.equals(teamId));
+    final result = await query.getSingleOrNull();
+    return result != null;
+  }
+
+  /// Updates the name of the team with the given [teamId].
+  Future<void> updateTeamName({
+    required String teamId,
+    required String newName,
+  }) async {
+    await (update(teamTable)..where((t) => t.id.equals(teamId))).write(
+      TeamTableCompanion(name: Value(newName)),
+    );
+  }
+
+  /// Retrieves the total count of teams in the database.
+  Future<int> getTeamCount() async {
+    final count =
+        await (selectOnly(teamTable)..addColumns([teamTable.id.count()]))
+            .map((row) => row.read(teamTable.id.count()))
+            .getSingle();
+    return count ?? 0;
+  }
+
+  /// Deletes all teams from the database.
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> deleteAllTeams() async {
+    final query = delete(teamTable);
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
+}
+

lib/data/dao/team_dao.g.dart

@@ -0,0 +1,8 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'team_dao.dart';
+
+// ignore_for_file: type=lint
+mixin _$TeamDaoMixin on DatabaseAccessor<AppDatabase> {
+  $TeamTableTable get teamTable => attachedDatabase.teamTable;
+}

lib/data/db/database.dart

@@ -1,17 +1,21 @@
 import 'package:drift/drift.dart';
 import 'package:drift_flutter/drift_flutter.dart';
+import 'package:game_tracker/data/dao/game_dao.dart';
 import 'package:game_tracker/data/dao/group_dao.dart';
-import 'package:game_tracker/data/dao/group_match_dao.dart';
 import 'package:game_tracker/data/dao/match_dao.dart';
 import 'package:game_tracker/data/dao/player_dao.dart';
 import 'package:game_tracker/data/dao/player_group_dao.dart';
 import 'package:game_tracker/data/dao/player_match_dao.dart';
-import 'package:game_tracker/data/db/tables/group_match_table.dart';
+import 'package:game_tracker/data/dao/score_dao.dart';
+import 'package:game_tracker/data/dao/team_dao.dart';
+import 'package:game_tracker/data/db/tables/game_table.dart';
 import 'package:game_tracker/data/db/tables/group_table.dart';
 import 'package:game_tracker/data/db/tables/match_table.dart';
 import 'package:game_tracker/data/db/tables/player_group_table.dart';
 import 'package:game_tracker/data/db/tables/player_match_table.dart';
 import 'package:game_tracker/data/db/tables/player_table.dart';
+import 'package:game_tracker/data/db/tables/score_table.dart';
+import 'package:game_tracker/data/db/tables/team_table.dart';
 import 'package:path_provider/path_provider.dart';
 
 part 'database.g.dart';
@@ -20,25 +24,29 @@ part 'database.g.dart';
   tables: [
     PlayerTable,
     GroupTable,
+    GameTable,
+    TeamTable,
     MatchTable,
     PlayerGroupTable,
     PlayerMatchTable,
-    GroupMatchTable,
+    ScoreTable,
   ],
   daos: [
     PlayerDao,
     GroupDao,
+    GameDao,
+    TeamDao,
     MatchDao,
     PlayerGroupDao,
     PlayerMatchDao,
-    GroupMatchDao,
+    ScoreDao,
   ],
 )
 class AppDatabase extends _$AppDatabase {
   AppDatabase([QueryExecutor? executor]) : super(executor ?? _openConnection());
 
   @override
-  int get schemaVersion => 1;
+  int get schemaVersion => 2;
 
   @override
   MigrationStrategy get migration {

lib/data/db/tables/game_table.dart

@@ -0,0 +1,14 @@
+import 'package:drift/drift.dart';
+
+class GameTable extends Table {
+  TextColumn get id => text()();
+  TextColumn get name => text()();
+  TextColumn get ruleset => text()();
+  TextColumn get description => text().nullable()();
+  TextColumn get color => text().nullable()();
+  TextColumn get icon => text().nullable()();
+  DateTimeColumn get createdAt => dateTime()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {id};
+}

lib/data/db/tables/group_match_table.dart

@@ -1,13 +0,0 @@
-import 'package:drift/drift.dart';
-import 'package:game_tracker/data/db/tables/group_table.dart';
-import 'package:game_tracker/data/db/tables/match_table.dart';
-
-class GroupMatchTable extends Table {
-  TextColumn get groupId =>
-      text().references(GroupTable, #id, onDelete: KeyAction.cascade)();
-  TextColumn get matchId =>
-      text().references(MatchTable, #id, onDelete: KeyAction.cascade)();
-
-  @override
-  Set<Column<Object>> get primaryKey => {groupId, matchId};
-}

lib/data/db/tables/group_table.dart

@@ -3,6 +3,7 @@ import 'package:drift/drift.dart';
 class GroupTable extends Table {
   TextColumn get id => text()();
   TextColumn get name => text()();
+  TextColumn get description => text().nullable()();
   DateTimeColumn get createdAt => dateTime()();
 
   @override

lib/data/db/tables/match_table.dart

@@ -1,9 +1,15 @@
 import 'package:drift/drift.dart';
+import 'package:game_tracker/data/db/tables/game_table.dart';
+import 'package:game_tracker/data/db/tables/group_table.dart';
 
 class MatchTable extends Table {
   TextColumn get id => text()();
-  TextColumn get name => text()();
-  late final winnerId = text().nullable()();
+  TextColumn get gameId =>
+      text().references(GameTable, #id, onDelete: KeyAction.cascade)();
+  TextColumn get groupId =>
+      text().references(GroupTable, #id, onDelete: KeyAction.cascade).nullable()(); // Nullable if not part of a group
+  TextColumn get name => text().nullable()();
+  TextColumn get notes => text().nullable()();
   DateTimeColumn get createdAt => dateTime()();
 
   @override

lib/data/db/tables/player_match_table.dart

@@ -1,12 +1,16 @@
 import 'package:drift/drift.dart';
 import 'package:game_tracker/data/db/tables/match_table.dart';
 import 'package:game_tracker/data/db/tables/player_table.dart';
+import 'package:game_tracker/data/db/tables/team_table.dart';
 
 class PlayerMatchTable extends Table {
   TextColumn get playerId =>
       text().references(PlayerTable, #id, onDelete: KeyAction.cascade)();
   TextColumn get matchId =>
       text().references(MatchTable, #id, onDelete: KeyAction.cascade)();
+  TextColumn get teamId =>
+      text().references(TeamTable, #id).nullable()();
+  IntColumn get score => integer()();
 
   @override
   Set<Column<Object>> get primaryKey => {playerId, matchId};

lib/data/db/tables/player_table.dart

@@ -3,6 +3,7 @@ import 'package:drift/drift.dart';
 class PlayerTable extends Table {
   TextColumn get id => text()();
   TextColumn get name => text()();
+  TextColumn get description => text().nullable()();
   DateTimeColumn get createdAt => dateTime()();
 
   @override

lib/data/db/tables/score_table.dart

@@ -0,0 +1,16 @@
+import 'package:drift/drift.dart';
+import 'package:game_tracker/data/db/tables/match_table.dart';
+import 'package:game_tracker/data/db/tables/player_table.dart';
+
+class ScoreTable extends Table {
+  TextColumn get playerId =>
+      text().references(PlayerTable, #id, onDelete: KeyAction.cascade)();
+  TextColumn get matchId =>
+      text().references(MatchTable, #id, onDelete: KeyAction.cascade)();
+  IntColumn get roundNumber => integer()();
+  IntColumn get score => integer()();
+  IntColumn get change => integer()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {playerId, matchId, roundNumber};
+}

lib/data/db/tables/team_table.dart

@@ -0,0 +1,10 @@
+import 'package:drift/drift.dart';
+
+class TeamTable extends Table {
+  TextColumn get id => text()();
+  TextColumn get name => text()();
+  DateTimeColumn get createdAt => dateTime()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {id};
+}

lib/data/dto/game.dart

@@ -0,0 +1,50 @@
+import 'package:clock/clock.dart';
+import 'package:uuid/uuid.dart';
+
+class Game {
+  final String id;
+  final DateTime createdAt;
+  final String name;
+  final String? ruleset;
+  final String? description;
+  final int? color;
+  final String? icon;
+
+  Game({
+    String? id,
+    DateTime? createdAt,
+    required this.name,
+    this.ruleset,
+    this.description,
+    this.color,
+    this.icon,
+  }) : id = id ?? const Uuid().v4(),
+       createdAt = createdAt ?? clock.now();
+
+  @override
+  String toString() {
+    return 'Game{id: $id, name: $name, ruleset: $ruleset, description: $description, color: $color, icon: $icon}';
+  }
+
+  /// Creates a Game instance from a JSON object.
+  Game.fromJson(Map<String, dynamic> json)
+    : id = json['id'],
+      createdAt = DateTime.parse(json['createdAt']),
+      name = json['name'],
+      ruleset = json['ruleset'],
+      description = json['description'],
+      color = json['color'],
+      icon = json['icon'];
+
+  /// Converts the Game instance to a JSON object.
+  Map<String, dynamic> toJson() => {
+    'id': id,
+    'createdAt': createdAt.toIso8601String(),
+    'name': name,
+    'ruleset': ruleset,
+    'description': description,
+    'color': color,
+    'icon': icon,
+  };
+}
+

lib/data/dto/group.dart

@@ -4,37 +4,40 @@ import 'package:uuid/uuid.dart';
 
 class Group {
   final String id;
-  final DateTime createdAt;
   final String name;
+  final String? description;
+  final DateTime createdAt;
   final List<Player> members;
 
   Group({
     String? id,
     DateTime? createdAt,
     required this.name,
+    this.description,
     required this.members,
   }) : id = id ?? const Uuid().v4(),
        createdAt = createdAt ?? clock.now();
 
   @override
   String toString() {
-    return 'Group{id: $id, name: $name,members: $members}';
+    return 'Group{id: $id, name: $name, description: $description, members: $members}';
   }
 
-  /// Creates a Group instance from a JSON object.
+  /// Creates a Group instance from a JSON object (memberIds format).
+  /// Player objects are reconstructed from memberIds by the DataTransferService.
   Group.fromJson(Map<String, dynamic> json)
     : id = json['id'],
       createdAt = DateTime.parse(json['createdAt']),
       name = json['name'],
-      members = (json['members'] as List)
-          .map((memberJson) => Player.fromJson(memberJson))
-          .toList();
+      description = json['description'],
+      members = []; // Populated during import via DataTransferService
 
-  /// Converts the Group instance to a JSON object.
+  /// Converts the Group instance to a JSON object using normalized format (memberIds only).
   Map<String, dynamic> toJson() => {
     'id': id,
     'createdAt': createdAt.toIso8601String(),
     'name': name,
-    'members': members.map((member) => member.toJson()).toList(),
+    'description': description,
+    'memberIds': members.map((member) => member.id).toList(),
   };
 }

lib/data/dto/match.dart

@@ -1,4 +1,5 @@
 import 'package:clock/clock.dart';
+import 'package:game_tracker/data/dto/game.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/player.dart';
 import 'package:uuid/uuid.dart';
@@ -7,45 +8,48 @@ class Match {
   final String id;
   final DateTime createdAt;
   final String name;
-  final List<Player>? players;
+  final Game? game;
   final Group? group;
+  final List<Player>? players;
+  final String? notes;
   Player? winner;
 
   Match({
     String? id,
     DateTime? createdAt,
     required this.name,
-    this.players,
+    this.game,
     this.group,
+    this.players,
+    this.notes,
     this.winner,
   }) : id = id ?? const Uuid().v4(),
        createdAt = createdAt ?? clock.now();
 
   @override
   String toString() {
-    return 'Match{\n\tid: $id,\n\tname: $name,\n\tplayers: $players,\n\tgroup: $group,\n\twinner: $winner\n}';
+    return 'Match{id: $id, name: $name, game: $game, group: $group, players: $players, notes: $notes}';
   }
 
-  /// Creates a Match instance from a JSON object.
+  /// Creates a Match instance from a JSON object (ID references format).
+  /// Related objects are reconstructed from IDs by the DataTransferService.
   Match.fromJson(Map<String, dynamic> json)
     : id = json['id'],
-      name = json['name'],
       createdAt = DateTime.parse(json['createdAt']),
-      players = json['players'] != null
-          ? (json['players'] as List)
-                .map((playerJson) => Player.fromJson(playerJson))
-                .toList()
-          : null,
-      group = json['group'] != null ? Group.fromJson(json['group']) : null,
-      winner = json['winner'] != null ? Player.fromJson(json['winner']) : null;
+      name = json['name'],
+      game = null, // Populated during import via DataTransferService
+      group = null, // Populated during import via DataTransferService
+      players = [], // Populated during import via DataTransferService
+      notes = json['notes'];
 
-  /// Converts the Match instance to a JSON object.
+  /// Converts the Match instance to a JSON object using normalized format (ID references only).
   Map<String, dynamic> toJson() => {
     'id': id,
     'createdAt': createdAt.toIso8601String(),
     'name': name,
-    'players': players?.map((player) => player.toJson()).toList(),
-    'group': group?.toJson(),
-    'winner': winner?.toJson(),
+    'gameId': game?.id,
+    'groupId': group?.id,
+    'playerIds': (players ?? []).map((player) => player.id).toList(),
+    'notes': notes,
   };
 }

lib/data/dto/player.dart

@@ -5,26 +5,33 @@ class Player {
   final String id;
   final DateTime createdAt;
   final String name;
+  final String? description;
 
-  Player({String? id, DateTime? createdAt, required this.name})
-    : id = id ?? const Uuid().v4(),
+  Player({
+    String? id,
+    DateTime? createdAt,
+    required this.name,
+    this.description,
+  }) : id = id ?? const Uuid().v4(),
        createdAt = createdAt ?? clock.now();
 
   @override
   String toString() {
-    return 'Player{id: $id,name: $name}';
+    return 'Player{id: $id, name: $name, description: $description}';
   }
 
   /// Creates a Player instance from a JSON object.
   Player.fromJson(Map<String, dynamic> json)
     : id = json['id'],
       createdAt = DateTime.parse(json['createdAt']),
-      name = json['name'];
+      name = json['name'],
+      description = json['description'];
 
   /// Converts the Player instance to a JSON object.
   Map<String, dynamic> toJson() => {
     'id': id,
     'createdAt': createdAt.toIso8601String(),
     'name': name,
+    'description': description,
   };
 }

lib/data/dto/team.dart

@@ -0,0 +1,40 @@
+import 'package:clock/clock.dart';
+import 'package:game_tracker/data/dto/player.dart';
+import 'package:uuid/uuid.dart';
+
+class Team {
+  final String id;
+  final String name;
+  final DateTime createdAt;
+  final List<Player> members;
+
+  Team({
+    String? id,
+    required this.name,
+    DateTime? createdAt,
+    required this.members,
+  }) : id = id ?? const Uuid().v4(),
+       createdAt = createdAt ?? clock.now();
+
+  @override
+  String toString() {
+    return 'Team{id: $id, name: $name, members: $members}';
+  }
+
+  /// Creates a Team instance from a JSON object (memberIds format).
+  /// Player objects are reconstructed from memberIds by the DataTransferService.
+  Team.fromJson(Map<String, dynamic> json)
+    : id = json['id'],
+      name = json['name'],
+      createdAt = DateTime.parse(json['createdAt']),
+      members = []; // Populated during import via DataTransferService
+
+  /// Converts the Team instance to a JSON object using normalized format (memberIds only).
+  Map<String, dynamic> toJson() => {
+    'id': id,
+    'name': name,
+    'createdAt': createdAt.toIso8601String(),
+    'memberIds': members.map((member) => member.id).toList(),
+  };
+}
+

lib/presentation/views/main_menu/match_view/create_match/create_match_view.dart

@@ -4,6 +4,7 @@ import 'package:game_tracker/core/constants.dart';
 import 'package:game_tracker/core/custom_theme.dart';
 import 'package:game_tracker/core/enums.dart';
 import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/match.dart';
 import 'package:game_tracker/data/dto/player.dart';
@@ -192,11 +193,34 @@ class _CreateMatchViewState extends State<CreateMatchView> {
                 buttonType: ButtonType.primary,
                 onPressed: _enableCreateGameButton()
                     ? () async {
+                        // Use a game from the games list
+                        Game? gameToUse;
+                        if (selectedGameIndex == -1) {
+                          // Use the first game as default if none selected
+                          final selectedGame = games[0];
+                          gameToUse = Game(
+                            name: selectedGame.$1,
+                            description: selectedGame.$2,
+                            ruleset: selectedGame.$3.name,
+                          );
+                        } else {
+                          // Use the selected game from the list
+                          final selectedGame = games[selectedGameIndex];
+                          gameToUse = Game(
+                            name: selectedGame.$1,
+                            description: selectedGame.$2,
+                            ruleset: selectedGame.$3.name,
+                          );
+                        }
+                        // Add the game to the database if it doesn't exist
+                        await db.gameDao.addGame(game: gameToUse);
+
                         Match match = Match(
                           name: _matchNameController.text.isEmpty
                               ? (hintText ?? '')
                               : _matchNameController.text.trim(),
                           createdAt: DateTime.now(),
+                          game: gameToUse,
                           group: selectedGroup,
                           players: selectedPlayers,
                         );

lib/services/data_transfer_service.dart

@@ -6,9 +6,11 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:game_tracker/core/enums.dart';
 import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/match.dart';
 import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/data/dto/team.dart';
 import 'package:json_schema/json_schema.dart';
 import 'package:provider/provider.dart';
 
@@ -17,39 +19,54 @@ class DataTransferService {
   static Future<void> deleteAllData(BuildContext context) async {
     final db = Provider.of<AppDatabase>(context, listen: false);
     await db.matchDao.deleteAllMatches();
+    await db.teamDao.deleteAllTeams();
     await db.groupDao.deleteAllGroups();
+    await db.gameDao.deleteAllGames();
     await db.playerDao.deleteAllPlayers();
   }
 
   /// Retrieves all application data and converts it to a JSON string.
-  /// Returns the JSON string representation of the data.
+  /// Returns the JSON string representation of the data in normalized format.
   static Future<String> getAppDataAsJson(BuildContext context) async {
     final db = Provider.of<AppDatabase>(context, listen: false);
     final matches = await db.matchDao.getAllMatches();
     final groups = await db.groupDao.getAllGroups();
     final players = await db.playerDao.getAllPlayers();
+    final games = await db.gameDao.getAllGames();
+    final teams = await db.teamDao.getAllTeams();
 
-    // Construct a JSON representation of the data
+    // Construct a JSON representation of the data in normalized format
     final Map<String, dynamic> jsonMap = {
       'players': players.map((p) => p.toJson()).toList(),
-
+      'games': games.map((g) => g.toJson()).toList(),
       'groups': groups
           .map((g) => {
                 'id': g.id,
                 'name': g.name,
+                'description': g.description,
                 'createdAt': g.createdAt.toIso8601String(),
                 'memberIds': (g.members).map((m) => m.id).toList(),
-      }).toList(),
-
+              })
+          .toList(),
+      'teams': teams
+          .map((t) => {
+                'id': t.id,
+                'name': t.name,
+                'createdAt': t.createdAt.toIso8601String(),
+                'memberIds': (t.members).map((m) => m.id).toList(),
+              })
+          .toList(),
       'matches': matches
           .map((m) => {
                 'id': m.id,
                 'name': m.name,
                 'createdAt': m.createdAt.toIso8601String(),
+                'gameId': m.game?.id,
                 'groupId': m.group?.id,
                 'playerIds': (m.players ?? []).map((p) => p.id).toList(),
-        'winnerId': m.winner?.id,
-      }).toList(),
+                'notes': m.notes,
+              })
+          .toList(),
     };
 
     return json.encode(jsonMap);
@@ -107,10 +124,12 @@ class DataTransferService {
       final Map<String, dynamic> decoded = json.decode(jsonString) as Map<String, dynamic>;
 
       final List<dynamic> playersJson = (decoded['players'] as List<dynamic>?) ?? [];
+      final List<dynamic> gamesJson = (decoded['games'] as List<dynamic>?) ?? [];
       final List<dynamic> groupsJson = (decoded['groups'] as List<dynamic>?) ?? [];
+      final List<dynamic> teamsJson = (decoded['teams'] as List<dynamic>?) ?? [];
       final List<dynamic> matchesJson = (decoded['matches'] as List<dynamic>?) ?? [];
 
-      // Players
+      // Import Players
       final List<Player> importedPlayers = playersJson
           .map((p) => Player.fromJson(p as Map<String, dynamic>))
           .toList();
@@ -119,7 +138,16 @@ class DataTransferService {
         for (final p in importedPlayers) p.id: p,
       };
 
-      // Groups
+      // Import Games
+      final List<Game> importedGames = gamesJson
+          .map((g) => Game.fromJson(g as Map<String, dynamic>))
+          .toList();
+
+      final Map<String, Game> gameById = {
+        for (final g in importedGames) g.id: g,
+      };
+
+      // Import Groups
       final List<Group> importedGroups = groupsJson.map((g) {
         final map = g as Map<String, dynamic>;
         final memberIds = (map['memberIds'] as List<dynamic>? ?? []).cast<String>();
@@ -132,6 +160,7 @@ class DataTransferService {
         return Group(
           id: map['id'] as String,
           name: map['name'] as String,
+          description: map['description'] as String?,
           members: members,
           createdAt: DateTime.parse(map['createdAt'] as String),
         );
@@ -141,33 +170,59 @@ class DataTransferService {
         for (final g in importedGroups) g.id: g,
       };
 
-      // Matches
+      // Import Teams
+      final List<Team> importedTeams = teamsJson.map((t) {
+        final map = t as Map<String, dynamic>;
+        final memberIds = (map['memberIds'] as List<dynamic>? ?? []).cast<String>();
+
+        final members = memberIds
+            .map((id) => playerById[id])
+            .whereType<Player>()
+            .toList();
+
+        return Team(
+          id: map['id'] as String,
+          name: map['name'] as String,
+          members: members,
+          createdAt: DateTime.parse(map['createdAt'] as String),
+        );
+      }).toList();
+
+      final Map<String, Team> teamById = {
+        for (final t in importedTeams) t.id: t,
+      };
+
+      // Import Matches
       final List<Match> importedMatches = matchesJson.map((m) {
         final map = m as Map<String, dynamic>;
 
+        final String? gameId = map['gameId'] as String?;
         final String? groupId = map['groupId'] as String?;
         final List<String> playerIds = (map['playerIds'] as List<dynamic>? ?? []).cast<String>();
-        final String? winnerId = map['winnerId'] as String?;
 
+        final game = (gameId == null) ? null : gameById[gameId];
         final group = (groupId == null) ? null : groupById[groupId];
         final players = playerIds
             .map((id) => playerById[id])
             .whereType<Player>()
             .toList();
-        final winner = (winnerId == null) ? null : playerById[winnerId];
 
         return Match(
           id: map['id'] as String,
           name: map['name'] as String,
+          game: game,
           group: group,
-          players: players,
+          players: players.isNotEmpty ? players : null,
           createdAt: DateTime.parse(map['createdAt'] as String),
-          winner: winner,
+          notes: map['notes'] as String?,
         );
       }).toList();
 
+      // Import all data into the database
       await db.playerDao.addPlayersAsList(players: importedPlayers);
+      await db.gameDao.addGamesAsList(games: importedGames);
       await db.groupDao.addGroupsAsList(groups: importedGroups);
+      await db.teamDao.addTeamsAsList(teams: importedTeams);
       await db.matchDao.addMatchAsList(matches: importedMatches);
 
       return ImportResult.success;

test/db_tests/game_test.dart

@@ -1,362 +1,548 @@
 import 'package:clock/clock.dart';
-import 'package:drift/drift.dart';
+import 'package:drift/drift.dart' hide isNull;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_tracker/data/db/database.dart';
-import 'package:game_tracker/data/dto/group.dart';
-import 'package:game_tracker/data/dto/match.dart';
-import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/data/dto/game.dart';
 
 void main() {
   late AppDatabase database;
-  late Player testPlayer1;
-  late Player testPlayer2;
-  late Player testPlayer3;
-  late Player testPlayer4;
-  late Player testPlayer5;
-  late Group testGroup1;
-  late Group testGroup2;
-  late Match testMatch1;
-  late Match testMatch2;
-  late Match testMatchOnlyPlayers;
-  late Match testMatchOnlyGroup;
-  final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
+  late Game testGame1;
+  late Game testGame2;
+  late Game testGame3;
+  final fixedDate = DateTime(2025, 11, 19, 00, 11, 23);
   final fakeClock = Clock(() => fixedDate);
 
-  setUp(() async {
+  setUp(() {
     database = AppDatabase(
       DatabaseConnection(
         NativeDatabase.memory(),
-        // Recommended for widget tests to avoid test errors.
         closeStreamsSynchronously: true,
       ),
     );
 
     withClock(fakeClock, () {
-      testPlayer1 = Player(name: 'Alice');
-      testPlayer2 = Player(name: 'Bob');
-      testPlayer3 = Player(name: 'Charlie');
-      testPlayer4 = Player(name: 'Diana');
-      testPlayer5 = Player(name: 'Eve');
-      testGroup1 = Group(
-        name: 'Test Group 2',
-        members: [testPlayer1, testPlayer2, testPlayer3],
+      testGame1 = Game(
+        name: 'Chess',
+        ruleset: 'winner.single',
+        description: 'A classic strategy game',
+        color: 0xFF0000FF,
+        icon: 'chess_icon',
       );
-      testGroup2 = Group(
-        name: 'Test Group 2',
-        members: [testPlayer4, testPlayer5],
+      testGame2 = Game(
+        id: 'game2',
+        name: 'Poker',
+        ruleset: 'Texas Hold\'em rules',
+        description: 'winner.multiple',
+        color: 0xFFFF0000,
+        icon: 'poker_icon',
       );
-      testMatch1 = Match(
-        name: 'First Test Match',
-        group: testGroup1,
-        players: [testPlayer4, testPlayer5],
-        winner: testPlayer4,
-      );
-      testMatch2 = Match(
-        name: 'Second Test Match',
-        group: testGroup2,
-        players: [testPlayer1, testPlayer2, testPlayer3],
-        winner: testPlayer2,
-      );
-      testMatchOnlyPlayers = Match(
-        name: 'Test Match with Players',
-        players: [testPlayer1, testPlayer2, testPlayer3],
-        winner: testPlayer3,
-      );
-      testMatchOnlyGroup = Match(
-        name: 'Test Match with Group',
-        group: testGroup2,
+      testGame3 = Game(
+        id: 'game3',
+        name: 'Monopoly',
+        description: 'A board game about real estate',
       );
     });
-    await database.playerDao.addPlayersAsList(
-      players: [
-        testPlayer1,
-        testPlayer2,
-        testPlayer3,
-        testPlayer4,
-        testPlayer5,
-      ],
-    );
-    await database.groupDao.addGroupsAsList(groups: [testGroup1, testGroup2]);
   });
+
   tearDown(() async {
     await database.close();
   });
 
-  group('Match Tests', () {
-    test('Adding and fetching single match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch1);
+  group('Game Tests', () {
 
-      final result = await database.matchDao.getMatchById(
-        matchId: testMatch1.id,
-      );
+    // Verifies that getAllGames returns an empty list when the database has no games.
+    test('getAllGames returns empty list when no games exist', () async {
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
+    });
 
-      expect(result.id, testMatch1.id);
-      expect(result.name, testMatch1.name);
-      expect(result.createdAt, testMatch1.createdAt);
+    // Verifies that a single game can be added and retrieved with all fields intact.
+    test('Adding and fetching a single game works correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
 
-      if (result.winner != null && testMatch1.winner != null) {
-        expect(result.winner!.id, testMatch1.winner!.id);
-        expect(result.winner!.name, testMatch1.winner!.name);
-        expect(result.winner!.createdAt, testMatch1.winner!.createdAt);
-      } else {
-        expect(result.winner, testMatch1.winner);
-      }
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 1);
+      expect(allGames.first.id, testGame1.id);
+      expect(allGames.first.name, testGame1.name);
+      expect(allGames.first.ruleset, testGame1.ruleset);
+      expect(allGames.first.description, testGame1.description);
+      expect(allGames.first.color, testGame1.color);
+      expect(allGames.first.icon, testGame1.icon);
+      expect(allGames.first.createdAt, testGame1.createdAt);
+    });
 
-      if (result.group != null) {
-        expect(result.group!.members.length, testGroup1.members.length);
+    // Verifies that multiple games can be added and retrieved correctly.
+    test('Adding and fetching multiple games works correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+      await database.gameDao.addGame(game: testGame2);
+      await database.gameDao.addGame(game: testGame3);
 
-        for (int i = 0; i < testGroup1.members.length; i++) {
-          expect(result.group!.members[i].id, testGroup1.members[i].id);
-          expect(result.group!.members[i].name, testGroup1.members[i].name);
-        }
-      } else {
-        fail('Group is null');
-      }
-      if (result.players != null) {
-        expect(result.players!.length, testMatch1.players!.length);
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 3);
 
-        for (int i = 0; i < testMatch1.players!.length; i++) {
-          expect(result.players![i].id, testMatch1.players![i].id);
-          expect(result.players![i].name, testMatch1.players![i].name);
+      final names = allGames.map((g) => g.name).toList();
+      expect(names, containsAll(['Chess', 'Poker', 'Monopoly']));
+    });
+
+    // Verifies that getGameById returns the correct game with all properties.
+    test('getGameById returns correct game', () async {
+      await database.gameDao.addGame(game: testGame1);
+      await database.gameDao.addGame(game: testGame2);
+
+      final game = await database.gameDao.getGameById(gameId: testGame2.id);
+      expect(game.id, testGame2.id);
+      expect(game.name, testGame2.name);
+      expect(game.ruleset, testGame2.ruleset);
+      expect(game.description, testGame2.description);
+      expect(game.color, testGame2.color);
+      expect(game.icon, testGame2.icon);
+    });
+
+    // Verifies that getGameById throws a StateError when the game doesn't exist.
+    test('getGameById throws exception for non-existent game', () async {
       expect(
-            result.players![i].createdAt,
-            testMatch1.players![i].createdAt,
+        () => database.gameDao.getGameById(gameId: 'non-existent-id'),
+        throwsA(isA<StateError>()),
       );
-        }
-      } else {
-        fail('Players is null');
-      }
     });
 
-    test('Adding and fetching multiple matches works correctly', () async {
-      await database.matchDao.addMatchAsList(
-        matches: [
-          testMatch1,
-          testMatch2,
-          testMatchOnlyGroup,
-          testMatchOnlyPlayers,
-        ],
-      );
+    // Verifies that addGame returns true when a game is successfully added.
+    test('addGame returns true when game is added successfully', () async {
+      final result = await database.gameDao.addGame(game: testGame1);
+      expect(result, true);
 
-      final allMatches = await database.matchDao.getAllMatches();
-      expect(allMatches.length, 4);
-
-      final testMatches = {
-        testMatch1.id: testMatch1,
-        testMatch2.id: testMatch2,
-        testMatchOnlyGroup.id: testMatchOnlyGroup,
-        testMatchOnlyPlayers.id: testMatchOnlyPlayers,
-      };
-
-      for (final match in allMatches) {
-        final testMatch = testMatches[match.id]!;
-
-        // Match-Checks
-        expect(match.id, testMatch.id);
-        expect(match.name, testMatch.name);
-        expect(match.createdAt, testMatch.createdAt);
-        if (match.winner != null && testMatch.winner != null) {
-          expect(match.winner!.id, testMatch.winner!.id);
-          expect(match.winner!.name, testMatch.winner!.name);
-          expect(match.winner!.createdAt, testMatch.winner!.createdAt);
-        } else {
-          expect(match.winner, testMatch.winner);
-        }
-
-        // Group-Checks
-        if (testMatch.group != null) {
-          expect(match.group!.id, testMatch.group!.id);
-          expect(match.group!.name, testMatch.group!.name);
-          expect(match.group!.createdAt, testMatch.group!.createdAt);
-
-          // Group Members-Checks
-          expect(match.group!.members.length, testMatch.group!.members.length);
-          for (int i = 0; i < testMatch.group!.members.length; i++) {
-            expect(match.group!.members[i].id, testMatch.group!.members[i].id);
-            expect(
-              match.group!.members[i].name,
-              testMatch.group!.members[i].name,
-            );
-            expect(
-              match.group!.members[i].createdAt,
-              testMatch.group!.members[i].createdAt,
-            );
-          }
-        } else {
-          expect(match.group, null);
-        }
-
-        // Players-Checks
-        if (testMatch.players != null) {
-          expect(match.players!.length, testMatch.players!.length);
-          for (int i = 0; i < testMatch.players!.length; i++) {
-            expect(match.players![i].id, testMatch.players![i].id);
-            expect(match.players![i].name, testMatch.players![i].name);
-            expect(
-              match.players![i].createdAt,
-              testMatch.players![i].createdAt,
-            );
-          }
-        } else {
-          expect(match.players, null);
-        }
-      }
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 1);
     });
 
-    test('Adding the same match twice does not create duplicates', () async {
-      await database.matchDao.addMatch(match: testMatch1);
-      await database.matchDao.addMatch(match: testMatch1);
+    // Verifies that addGame returns false when trying to add a duplicate game.
+    test('addGame returns false when game already exists', () async {
+      final firstAdd = await database.gameDao.addGame(game: testGame1);
+      expect(firstAdd, true);
 
-      final matchCount = await database.matchDao.getMatchCount();
-      expect(matchCount, 1);
+      final secondAdd = await database.gameDao.addGame(game: testGame1);
+      expect(secondAdd, false);
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 1);
     });
 
-    test('Match existence check works correctly', () async {
-      var matchExists = await database.matchDao.matchExists(
-        matchId: testMatch1.id,
+    // Verifies that a game with null optional fields can be added and retrieved.
+    test('addGame handles game with null optional fields', () async {
+      final gameWithNulls = Game(name: 'Simple Game');
+      final result = await database.gameDao.addGame(game: gameWithNulls);
+      expect(result, true);
+
+      final fetchedGame = await database.gameDao.getGameById(
+        gameId: gameWithNulls.id,
       );
-      expect(matchExists, false);
-
-      await database.matchDao.addMatch(match: testMatch1);
-
-      matchExists = await database.matchDao.matchExists(matchId: testMatch1.id);
-      expect(matchExists, true);
+      expect(fetchedGame.name, 'Simple Game');
+      expect(fetchedGame.description, isNull);
+      expect(fetchedGame.color, isNull);
+      expect(fetchedGame.icon, isNull);
     });
 
-    test('Deleting a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch1);
-
-      final matchDeleted = await database.matchDao.deleteMatch(
-        matchId: testMatch1.id,
+    // Verifies that multiple games can be added at once using addGamesAsList.
+    test('addGamesAsList adds multiple games correctly', () async {
+      final result = await database.gameDao.addGamesAsList(
+        games: [testGame1, testGame2, testGame3],
       );
-      expect(matchDeleted, true);
+      expect(result, true);
 
-      final matchExists = await database.matchDao.matchExists(
-        matchId: testMatch1.id,
-      );
-      expect(matchExists, false);
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 3);
     });
 
-    test('Getting the match count works correctly', () async {
-      var matchCount = await database.matchDao.getMatchCount();
-      expect(matchCount, 0);
+    // Verifies that addGamesAsList returns false when given an empty list.
+    test('addGamesAsList returns false for empty list', () async {
+      final result = await database.gameDao.addGamesAsList(games: []);
+      expect(result, false);
 
-      await database.matchDao.addMatch(match: testMatch1);
-
-      matchCount = await database.matchDao.getMatchCount();
-      expect(matchCount, 1);
-
-      await database.matchDao.addMatch(match: testMatch2);
-
-      matchCount = await database.matchDao.getMatchCount();
-      expect(matchCount, 2);
-
-      await database.matchDao.deleteMatch(matchId: testMatch1.id);
-
-      matchCount = await database.matchDao.getMatchCount();
-      expect(matchCount, 1);
-
-      await database.matchDao.deleteMatch(matchId: testMatch2.id);
-
-      matchCount = await database.matchDao.getMatchCount();
-      expect(matchCount, 0);
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 0);
     });
 
-    test('Checking if match has winner works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch1);
-      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+    // Verifies that addGamesAsList ignores duplicate games when adding.
+    test('addGamesAsList ignores duplicate games', () async {
+      await database.gameDao.addGame(game: testGame1);
 
-      var hasWinner = await database.matchDao.hasWinner(matchId: testMatch1.id);
-      expect(hasWinner, true);
-
-      hasWinner = await database.matchDao.hasWinner(
-        matchId: testMatchOnlyGroup.id,
+      final result = await database.gameDao.addGamesAsList(
+        games: [testGame1, testGame2],
       );
-      expect(hasWinner, false);
+      expect(result, true);
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 2);
     });
 
-    test('Fetching the winner of a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch1);
+    // Verifies that deleteGame returns true and removes the game from database.
+    test('deleteGame returns true when game is deleted', () async {
+      await database.gameDao.addGame(game: testGame1);
 
-      final winner = await database.matchDao.getWinner(matchId: testMatch1.id);
-      if (winner == null) {
-        fail('Winner is null');
-      } else {
-        expect(winner.id, testMatch1.winner!.id);
-        expect(winner.name, testMatch1.winner!.name);
-        expect(winner.createdAt, testMatch1.winner!.createdAt);
-      }
+      final result = await database.gameDao.deleteGame(gameId: testGame1.id);
+      expect(result, true);
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
     });
 
-    test('Updating the winner of a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch1);
-
-      final winner = await database.matchDao.getWinner(matchId: testMatch1.id);
-      if (winner == null) {
-        fail('Winner is null');
-      } else {
-        expect(winner.id, testMatch1.winner!.id);
-        expect(winner.name, testMatch1.winner!.name);
-        expect(winner.createdAt, testMatch1.winner!.createdAt);
-        expect(winner.id, testPlayer4.id);
-        expect(winner.id != testPlayer5.id, true);
-      }
-
-      await database.matchDao.setWinner(
-        matchId: testMatch1.id,
-        winnerId: testPlayer5.id,
+    // Verifies that deleteGame returns false for a non-existent game ID.
+    test('deleteGame returns false for non-existent game', () async {
+      final result = await database.gameDao.deleteGame(
+        gameId: 'non-existent-id',
       );
-
-      final newWinner = await database.matchDao.getWinner(
-        matchId: testMatch1.id,
-      );
-
-      if (newWinner == null) {
-        fail('New winner is null');
-      } else {
-        expect(newWinner.id, testPlayer5.id);
-        expect(newWinner.name, testPlayer5.name);
-        expect(newWinner.createdAt, testPlayer5.createdAt);
-      }
+      expect(result, false);
     });
 
-    test('Removing a winner works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch2);
-
-      var hasWinner = await database.matchDao.hasWinner(matchId: testMatch2.id);
-      expect(hasWinner, true);
-
-      await database.matchDao.removeWinner(matchId: testMatch2.id);
-
-      hasWinner = await database.matchDao.hasWinner(matchId: testMatch2.id);
-      expect(hasWinner, false);
-
-      final removedWinner = await database.matchDao.getWinner(
-        matchId: testMatch2.id,
+    // Verifies that deleteGame only removes the specified game, leaving others intact.
+    test('deleteGame only deletes the specified game', () async {
+      await database.gameDao.addGamesAsList(
+        games: [testGame1, testGame2, testGame3],
       );
 
-      expect(removedWinner, null);
+      await database.gameDao.deleteGame(gameId: testGame2.id);
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames.length, 2);
+      expect(allGames.any((g) => g.id == testGame2.id), false);
+      expect(allGames.any((g) => g.id == testGame1.id), true);
+      expect(allGames.any((g) => g.id == testGame3.id), true);
     });
 
-    test('Renaming a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatch1);
+    // Verifies that gameExists returns true when the game exists in database.
+    test('gameExists returns true for existing game', () async {
+      await database.gameDao.addGame(game: testGame1);
 
-      var fetchedMatch = await database.matchDao.getMatchById(
-        matchId: testMatch1.id,
+      final exists = await database.gameDao.gameExists(gameId: testGame1.id);
+      expect(exists, true);
+    });
+
+    // Verifies that gameExists returns false for a non-existent game ID.
+    test('gameExists returns false for non-existent game', () async {
+      final exists = await database.gameDao.gameExists(
+        gameId: 'non-existent-id',
       );
-      expect(fetchedMatch.name, testMatch1.name);
+      expect(exists, false);
+    });
 
-      const newName = 'Updated Match Name';
-      await database.matchDao.updateMatchName(
-        matchId: testMatch1.id,
-        newName: newName,
+    // Verifies that gameExists returns false after a game has been deleted.
+    test('gameExists returns false after game is deleted', () async {
+      await database.gameDao.addGame(game: testGame1);
+      await database.gameDao.deleteGame(gameId: testGame1.id);
+
+      final exists = await database.gameDao.gameExists(gameId: testGame1.id);
+      expect(exists, false);
+    });
+
+    // Verifies that updateGameName correctly updates only the name field.
+    test('updateGameName updates the name correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameName(
+        gameId: testGame1.id,
+        newName: 'Updated Chess',
       );
 
-      fetchedMatch = await database.matchDao.getMatchById(
-        matchId: testMatch1.id,
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
       );
-      expect(fetchedMatch.name, newName);
+      expect(updatedGame.name, 'Updated Chess');
+      expect(updatedGame.ruleset, testGame1.ruleset);
+    });
+
+    // Verifies that updateGameName does nothing when game doesn't exist.
+    test('updateGameName does nothing for non-existent game', () async {
+      await database.gameDao.updateGameName(
+        gameId: 'non-existent-id',
+        newName: 'New Name',
+      );
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
+    });
+
+    // Verifies that updateGameRuleset correctly updates only the ruleset field.
+    test('updateGameRuleset updates the ruleset correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameRuleset(
+        gameId: testGame1.id,
+        newRuleset: 'New ruleset for chess',
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.ruleset, 'New ruleset for chess');
+      expect(updatedGame.name, testGame1.name);
+    });
+
+    // Verifies that updateGameRuleset does nothing when game doesn't exist.
+    test('updateGameRuleset does nothing for non-existent game', () async {
+      await database.gameDao.updateGameRuleset(
+        gameId: 'non-existent-id',
+        newRuleset: 'New Ruleset',
+      );
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
+    });
+
+    // Verifies that updateGameDescription correctly updates the description.
+    test('updateGameDescription updates the description correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameDescription(
+        gameId: testGame1.id,
+        newDescription: 'An updated description',
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.description, 'An updated description');
+    });
+
+    // Verifies that updateGameDescription can set the description to null.
+    test('updateGameDescription can set description to null', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameDescription(
+        gameId: testGame1.id,
+        newDescription: null,
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.description, isNull);
+    });
+
+    // Verifies that updateGameDescription does nothing when game doesn't exist.
+    test('updateGameDescription does nothing for non-existent game', () async {
+      await database.gameDao.updateGameDescription(
+        gameId: 'non-existent-id',
+        newDescription: 'New Description',
+      );
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
+    });
+
+    // Verifies that updateGameColor correctly updates the color value.
+    test('updateGameColor updates the color correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameColor(
+        gameId: testGame1.id,
+        newColor: 0xFF00FF00,
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.color, 0xFF00FF00);
+    });
+
+    // Verifies that updateGameColor can set the color to null.
+    test('updateGameColor can set color to null', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameColor(
+        gameId: testGame1.id,
+        newColor: null,
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.color, isNull);
+    });
+
+    // Verifies that updateGameColor does nothing when game doesn't exist.
+    test('updateGameColor does nothing for non-existent game', () async {
+      await database.gameDao.updateGameColor(
+        gameId: 'non-existent-id',
+        newColor: 0xFF00FF00,
+      );
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
+    });
+
+    // Verifies that updateGameIcon correctly updates the icon value.
+    test('updateGameIcon updates the icon correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameIcon(
+        gameId: testGame1.id,
+        newIcon: 'new_chess_icon',
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.icon, 'new_chess_icon');
+    });
+
+    // Verifies that updateGameIcon can set the icon to null.
+    test('updateGameIcon can set icon to null', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameIcon(
+        gameId: testGame1.id,
+        newIcon: null,
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.icon, isNull);
+    });
+
+    // Verifies that updateGameIcon does nothing when game doesn't exist.
+    test('updateGameIcon does nothing for non-existent game', () async {
+      await database.gameDao.updateGameIcon(
+        gameId: 'non-existent-id',
+        newIcon: 'some_icon',
+      );
+
+      final allGames = await database.gameDao.getAllGames();
+      expect(allGames, isEmpty);
+    });
+
+    // Verifies that getGameCount returns 0 when no games exist.
+    test('getGameCount returns 0 when no games exist', () async {
+      final count = await database.gameDao.getGameCount();
+      expect(count, 0);
+    });
+
+    // Verifies that getGameCount returns the correct count after adding games.
+    test('getGameCount returns correct count after adding games', () async {
+      await database.gameDao.addGamesAsList(
+        games: [testGame1, testGame2, testGame3],
+      );
+
+      final count = await database.gameDao.getGameCount();
+      expect(count, 3);
+    });
+
+    // Verifies that getGameCount updates correctly after deleting a game.
+    test('getGameCount updates correctly after deletion', () async {
+      await database.gameDao.addGamesAsList(
+        games: [testGame1, testGame2],
+      );
+
+      final countBefore = await database.gameDao.getGameCount();
+      expect(countBefore, 2);
+
+      await database.gameDao.deleteGame(gameId: testGame1.id);
+
+      final countAfter = await database.gameDao.getGameCount();
+      expect(countAfter, 1);
+    });
+
+    // Verifies that deleteAllGames removes all games from the database.
+    test('deleteAllGames removes all games', () async {
+      await database.gameDao.addGamesAsList(
+        games: [testGame1, testGame2, testGame3],
+      );
+
+      final countBefore = await database.gameDao.getGameCount();
+      expect(countBefore, 3);
+
+      final result = await database.gameDao.deleteAllGames();
+      expect(result, true);
+
+      final countAfter = await database.gameDao.getGameCount();
+      expect(countAfter, 0);
+    });
+
+    // Verifies that deleteAllGames returns false when no games exist.
+    test('deleteAllGames returns false when no games exist', () async {
+      final result = await database.gameDao.deleteAllGames();
+      expect(result, false);
+    });
+
+    // Verifies that games with special characters (quotes, emojis) are stored correctly.
+    test('Game with special characters in name is stored correctly', () async {
+      final specialGame = Game(
+        name: 'Game\'s & "Special" <Name>',
+        description: 'Description with émojis 🎮🎲',
+      );
+      await database.gameDao.addGame(game: specialGame);
+
+      final fetchedGame = await database.gameDao.getGameById(
+        gameId: specialGame.id,
+      );
+      expect(fetchedGame.name, 'Game\'s & "Special" <Name>');
+      expect(fetchedGame.description, 'Description with émojis 🎮🎲');
+    });
+
+    // Verifies that games with empty string fields are stored and retrieved correctly.
+    test('Game with empty string fields is stored correctly', () async {
+      final emptyGame = Game(
+        name: '',
+        ruleset: '',
+        description: '',
+        icon: '',
+      );
+      await database.gameDao.addGame(game: emptyGame);
+
+      final fetchedGame = await database.gameDao.getGameById(
+        gameId: emptyGame.id,
+      );
+      expect(fetchedGame.name, '');
+      expect(fetchedGame.ruleset, '');
+      expect(fetchedGame.description, '');
+      expect(fetchedGame.icon, '');
+    });
+
+    // Verifies that games with very long strings (10000 chars) are handled correctly.
+    test('Game with very long strings is stored correctly', () async {
+      final longString = 'A' * 10000;
+      final longGame = Game(
+        name: longString,
+        description: longString,
+        ruleset: longString,
+      );
+      await database.gameDao.addGame(game: longGame);
+
+      final fetchedGame = await database.gameDao.getGameById(
+        gameId: longGame.id,
+      );
+      expect(fetchedGame.name.length, 10000);
+      expect(fetchedGame.description?.length, 10000);
+      expect(fetchedGame.ruleset?.length, 10000);
+    });
+
+    // Verifies that multiple sequential updates to the same game work correctly.
+    test('Multiple updates to the same game work correctly', () async {
+      await database.gameDao.addGame(game: testGame1);
+
+      await database.gameDao.updateGameName(
+        gameId: testGame1.id,
+        newName: 'Updated Name',
+      );
+      await database.gameDao.updateGameColor(
+        gameId: testGame1.id,
+        newColor: 0xFF123456,
+      );
+      await database.gameDao.updateGameDescription(
+        gameId: testGame1.id,
+        newDescription: 'Updated Description',
+      );
+
+      final updatedGame = await database.gameDao.getGameById(
+        gameId: testGame1.id,
+      );
+      expect(updatedGame.name, 'Updated Name');
+      expect(updatedGame.color, 0xFF123456);
+      expect(updatedGame.description, 'Updated Description');
+      expect(updatedGame.ruleset, testGame1.ruleset);
+      expect(updatedGame.icon, testGame1.icon);
     });
   });
 }
+

test/db_tests/group_match_test.dart

@@ -1,221 +0,0 @@
-import 'package:clock/clock.dart';
-import 'package:drift/drift.dart' hide isNotNull;
-import 'package:drift/native.dart';
-import 'package:flutter_test/flutter_test.dart';
-import 'package:game_tracker/data/db/database.dart';
-import 'package:game_tracker/data/dto/group.dart';
-import 'package:game_tracker/data/dto/match.dart';
-import 'package:game_tracker/data/dto/player.dart';
-
-void main() {
-  late AppDatabase database;
-  late Player testPlayer1;
-  late Player testPlayer2;
-  late Player testPlayer3;
-  late Player testPlayer4;
-  late Player testPlayer5;
-  late Group testGroup1;
-  late Group testGroup2;
-  late Match testMatchWithGroup;
-  late Match testMatchWithPlayers;
-  final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
-  final fakeClock = Clock(() => fixedDate);
-
-  setUp(() async {
-    database = AppDatabase(
-      DatabaseConnection(
-        NativeDatabase.memory(),
-        // Recommended for widget tests to avoid test errors.
-        closeStreamsSynchronously: true,
-      ),
-    );
-
-    withClock(fakeClock, () {
-      testPlayer1 = Player(name: 'Alice');
-      testPlayer2 = Player(name: 'Bob');
-      testPlayer3 = Player(name: 'Charlie');
-      testPlayer4 = Player(name: 'Diana');
-      testPlayer5 = Player(name: 'Eve');
-      testGroup1 = Group(
-        name: 'Test Group',
-        members: [testPlayer1, testPlayer2, testPlayer3],
-      );
-      testGroup2 = Group(
-        name: 'Test Group',
-        members: [testPlayer3, testPlayer2],
-      );
-      testMatchWithPlayers = Match(
-        name: 'Test Match with Players',
-        players: [testPlayer4, testPlayer5],
-      );
-      testMatchWithGroup = Match(
-        name: 'Test Match with Group',
-        group: testGroup1,
-      );
-    });
-    await database.playerDao.addPlayersAsList(
-      players: [
-        testPlayer1,
-        testPlayer2,
-        testPlayer3,
-        testPlayer4,
-        testPlayer5,
-      ],
-    );
-    await database.groupDao.addGroupsAsList(groups: [testGroup1, testGroup2]);
-  });
-  tearDown(() async {
-    await database.close();
-  });
-  group('Group-Match Tests', () {
-    test('matchHasGroup() has group works correctly', () async {
-      await database.matchDao.addMatch(match: testMatchWithPlayers);
-      await database.groupDao.addGroup(group: testGroup1);
-
-      var matchHasGroup = await database.groupMatchDao.matchHasGroup(
-        matchId: testMatchWithPlayers.id,
-      );
-
-      expect(matchHasGroup, false);
-
-      await database.groupMatchDao.addGroupToMatch(
-        matchId: testMatchWithPlayers.id,
-        groupId: testGroup1.id,
-      );
-
-      matchHasGroup = await database.groupMatchDao.matchHasGroup(
-        matchId: testMatchWithPlayers.id,
-      );
-
-      expect(matchHasGroup, true);
-    });
-
-    test('Adding a group to a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatchWithPlayers);
-      await database.groupDao.addGroup(group: testGroup1);
-      await database.groupMatchDao.addGroupToMatch(
-        matchId: testMatchWithPlayers.id,
-        groupId: testGroup1.id,
-      );
-
-      var groupAdded = await database.groupMatchDao.isGroupInMatch(
-        matchId: testMatchWithPlayers.id,
-        groupId: testGroup1.id,
-      );
-      expect(groupAdded, true);
-
-      groupAdded = await database.groupMatchDao.isGroupInMatch(
-        matchId: testMatchWithPlayers.id,
-        groupId: '',
-      );
-      expect(groupAdded, false);
-    });
-
-    test('Removing group from match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatchWithGroup);
-
-      final groupToRemove = testMatchWithGroup.group!;
-
-      final removed = await database.groupMatchDao.removeGroupFromMatch(
-        groupId: groupToRemove.id,
-        matchId: testMatchWithGroup.id,
-      );
-      expect(removed, true);
-
-      final result = await database.matchDao.getMatchById(
-        matchId: testMatchWithGroup.id,
-      );
-      expect(result.group, null);
-    });
-
-    test('Retrieving group of a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatchWithGroup);
-      final group = await database.groupMatchDao.getGroupOfMatch(
-        matchId: testMatchWithGroup.id,
-      );
-
-      if (group == null) {
-        fail('Group should not be null');
-      }
-
-      expect(group.id, testGroup1.id);
-      expect(group.name, testGroup1.name);
-      expect(group.createdAt, testGroup1.createdAt);
-      expect(group.members.length, testGroup1.members.length);
-      for (int i = 0; i < group.members.length; i++) {
-        expect(group.members[i].id, testGroup1.members[i].id);
-        expect(group.members[i].name, testGroup1.members[i].name);
-        expect(group.members[i].createdAt, testGroup1.members[i].createdAt);
-      }
-    });
-
-    test('Updating the group of a match works correctly', () async {
-      await database.matchDao.addMatch(match: testMatchWithGroup);
-
-      var group = await database.groupMatchDao.getGroupOfMatch(
-        matchId: testMatchWithGroup.id,
-      );
-
-      if (group == null) {
-        fail('Initial group should not be null');
-      } else {
-        expect(group.id, testGroup1.id);
-        expect(group.name, testGroup1.name);
-        expect(group.createdAt, testGroup1.createdAt);
-        expect(group.members.length, testGroup1.members.length);
-      }
-
-      await database.groupDao.addGroup(group: testGroup2);
-      await database.groupMatchDao.updateGroupOfMatch(
-        matchId: testMatchWithGroup.id,
-        newGroupId: testGroup2.id,
-      );
-
-      group = await database.groupMatchDao.getGroupOfMatch(
-        matchId: testMatchWithGroup.id,
-      );
-
-      if (group == null) {
-        fail('Updated group should not be null');
-      } else {
-        expect(group.id, testGroup2.id);
-        expect(group.name, testGroup2.name);
-        expect(group.createdAt, testGroup2.createdAt);
-        expect(group.members.length, testGroup2.members.length);
-        for (int i = 0; i < group.members.length; i++) {
-          expect(group.members[i].id, testGroup2.members[i].id);
-          expect(group.members[i].name, testGroup2.members[i].name);
-          expect(group.members[i].createdAt, testGroup2.members[i].createdAt);
-        }
-      }
-    });
-
-    test('Adding the same group to seperate matches works correctly', () async {
-      final match1 = Match(name: 'Match 1', group: testGroup1);
-      final match2 = Match(name: 'Match 2', group: testGroup1);
-
-      await Future.wait([
-        database.matchDao.addMatch(match: match1),
-        database.matchDao.addMatch(match: match2),
-      ]);
-
-      final group1 = await database.groupMatchDao.getGroupOfMatch(
-        matchId: match1.id,
-      );
-      final group2 = await database.groupMatchDao.getGroupOfMatch(
-        matchId: match2.id,
-      );
-
-      expect(group1, isNotNull);
-      expect(group2, isNotNull);
-
-      final groups = [group1!, group2!];
-      for (final group in groups) {
-        expect(group.members.length, testGroup1.members.length);
-        expect(group.id, testGroup1.id);
-        expect(group.name, testGroup1.name);
-        expect(group.createdAt, testGroup1.createdAt);
-      }
-    });
-  });
-}

test/db_tests/group_test.dart

@@ -1,5 +1,5 @@
 import 'package:clock/clock.dart';
-import 'package:drift/drift.dart';
+import 'package:drift/drift.dart' hide isNull;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_tracker/data/db/database.dart';
@@ -58,6 +58,8 @@ void main() {
     await database.close();
   });
   group('Group Tests', () {
+
+    // Verifies that a single group can be added and retrieved with all fields and members intact.
     test('Adding and fetching a single group works correctly', () async {
       await database.groupDao.addGroup(group: testGroup1);
 
@@ -80,6 +82,7 @@ void main() {
       }
     });
 
+    // Verifies that multiple groups can be added and retrieved with correct members.
     test('Adding and fetching multiple groups works correctly', () async {
       await database.groupDao.addGroupsAsList(
         groups: [testGroup1, testGroup2, testGroup3, testGroup4],
@@ -106,6 +109,7 @@ void main() {
       }
     });
 
+    // Verifies that adding the same group twice does not create duplicates.
     test('Adding the same group twice does not create duplicates', () async {
       await database.groupDao.addGroup(group: testGroup1);
       await database.groupDao.addGroup(group: testGroup1);
@@ -114,6 +118,7 @@ void main() {
       expect(allGroups.length, 1);
     });
 
+    // Verifies that groupExists returns correct boolean based on group presence.
     test('Group existence check works correctly', () async {
       var groupExists = await database.groupDao.groupExists(
         groupId: testGroup1.id,
@@ -126,6 +131,7 @@ void main() {
       expect(groupExists, true);
     });
 
+    // Verifies that deleteGroup removes the group and returns true.
     test('Deleting a group works correctly', () async {
       await database.groupDao.addGroup(group: testGroup1);
 
@@ -140,12 +146,13 @@ void main() {
       expect(groupExists, false);
     });
 
+    // Verifies that updateGroupName correctly updates only the name field.
     test('Updating a group name works correcly', () async {
       await database.groupDao.addGroup(group: testGroup1);
 
       const newGroupName = 'new group name';
 
-      await database.groupDao.updateGroupname(
+      await database.groupDao.updateGroupName(
         groupId: testGroup1.id,
         newName: newGroupName,
       );
@@ -156,6 +163,7 @@ void main() {
       expect(result.name, newGroupName);
     });
 
+    // Verifies that getGroupCount returns correct count through add/delete operations.
     test('Getting the group count works correctly', () async {
       final initialCount = await database.groupDao.getGroupCount();
       expect(initialCount, 0);
@@ -173,5 +181,189 @@ void main() {
       final finalCount = await database.groupDao.getGroupCount();
       expect(finalCount, 0);
     });
+
+    // Verifies that getAllGroups returns an empty list when no groups exist.
+    test('getAllGroups returns empty list when no groups exist', () async {
+      final allGroups = await database.groupDao.getAllGroups();
+      expect(allGroups, isEmpty);
+    });
+
+    // Verifies that getGroupById throws StateError for non-existent group ID.
+    test('getGroupById throws exception for non-existent group', () async {
+      expect(
+        () => database.groupDao.getGroupById(groupId: 'non-existent-id'),
+        throwsA(isA<StateError>()),
+      );
+    });
+
+    // Verifies that addGroup returns false when trying to add a duplicate group.
+    test('addGroup returns false when group already exists', () async {
+      final firstAdd = await database.groupDao.addGroup(group: testGroup1);
+      expect(firstAdd, true);
+
+      final secondAdd = await database.groupDao.addGroup(group: testGroup1);
+      expect(secondAdd, false);
+
+      final allGroups = await database.groupDao.getAllGroups();
+      expect(allGroups.length, 1);
+    });
+
+    // Verifies that addGroupsAsList handles an empty list without errors.
+    test('addGroupsAsList handles empty list correctly', () async {
+      await database.groupDao.addGroupsAsList(groups: []);
+
+      final allGroups = await database.groupDao.getAllGroups();
+      expect(allGroups.length, 0);
+    });
+
+    // Verifies that deleteGroup returns false for a non-existent group ID.
+    test('deleteGroup returns false for non-existent group', () async {
+      final deleted = await database.groupDao.deleteGroup(
+        groupId: 'non-existent-id',
+      );
+      expect(deleted, false);
+    });
+
+    // Verifies that updateGroupName returns false for a non-existent group ID.
+    test('updateGroupName returns false for non-existent group', () async {
+      final updated = await database.groupDao.updateGroupName(
+        groupId: 'non-existent-id',
+        newName: 'New Name',
+      );
+      expect(updated, false);
+    });
+
+    // Verifies that updateGroupDescription correctly updates the description field.
+    test('Updating a group description works correctly', () async {
+      await database.groupDao.addGroup(group: testGroup1);
+
+      const newDescription = 'This is a new description';
+
+      final updated = await database.groupDao.updateGroupDescription(
+        groupId: testGroup1.id,
+        newDescription: newDescription,
+      );
+      expect(updated, true);
+
+      final result = await database.groupDao.getGroupById(
+        groupId: testGroup1.id,
+      );
+      expect(result.description, newDescription);
+    });
+
+    // Verifies that updateGroupDescription can set the description to null.
+    test('updateGroupDescription can set description to null', () async {
+      final groupWithDescription = Group(
+        name: 'Group with description',
+        description: 'Initial description',
+        members: [testPlayer1],
+      );
+      await database.groupDao.addGroup(group: groupWithDescription);
+
+      final updated = await database.groupDao.updateGroupDescription(
+        groupId: groupWithDescription.id,
+        newDescription: null,
+      );
+      expect(updated, true);
+
+      final result = await database.groupDao.getGroupById(
+        groupId: groupWithDescription.id,
+      );
+      expect(result.description, isNull);
+    });
+
+    // Verifies that updateGroupDescription returns false for a non-existent group.
+    test('updateGroupDescription returns false for non-existent group',
+        () async {
+      final updated = await database.groupDao.updateGroupDescription(
+        groupId: 'non-existent-id',
+        newDescription: 'New Description',
+      );
+      expect(updated, false);
+    });
+
+    // Verifies that deleteAllGroups removes all groups from the database.
+    test('deleteAllGroups removes all groups', () async {
+      await database.groupDao.addGroupsAsList(
+        groups: [testGroup1, testGroup2],
+      );
+
+      final countBefore = await database.groupDao.getGroupCount();
+      expect(countBefore, 2);
+
+      final deleted = await database.groupDao.deleteAllGroups();
+      expect(deleted, true);
+
+      final countAfter = await database.groupDao.getGroupCount();
+      expect(countAfter, 0);
+    });
+
+    // Verifies that deleteAllGroups returns false when no groups exist.
+    test('deleteAllGroups returns false when no groups exist', () async {
+      final deleted = await database.groupDao.deleteAllGroups();
+      expect(deleted, false);
+    });
+
+    // Verifies that groups with special characters (quotes, emojis) are stored correctly.
+    test('Group with special characters in name is stored correctly', () async {
+      final specialGroup = Group(
+        name: 'Group\'s & "Special" <Name>',
+        description: 'Description with émojis 🎮🎲',
+        members: [testPlayer1],
+      );
+      await database.groupDao.addGroup(group: specialGroup);
+
+      final fetchedGroup = await database.groupDao.getGroupById(
+        groupId: specialGroup.id,
+      );
+      expect(fetchedGroup.name, 'Group\'s & "Special" <Name>');
+      expect(fetchedGroup.description, 'Description with émojis 🎮🎲');
+    });
+
+    // Verifies that a group with an empty members list can be stored and retrieved.
+    test('Group with empty members list is stored correctly', () async {
+      final emptyGroup = Group(
+        name: 'Empty Group',
+        members: [],
+      );
+      await database.groupDao.addGroup(group: emptyGroup);
+
+      final fetchedGroup = await database.groupDao.getGroupById(
+        groupId: emptyGroup.id,
+      );
+      expect(fetchedGroup.name, 'Empty Group');
+      expect(fetchedGroup.members, isEmpty);
+    });
+
+    // Verifies that multiple sequential updates to the same group work correctly.
+    test('Multiple updates to the same group work correctly', () async {
+      await database.groupDao.addGroup(group: testGroup1);
+
+      await database.groupDao.updateGroupName(
+        groupId: testGroup1.id,
+        newName: 'Updated Name',
+      );
+      await database.groupDao.updateGroupDescription(
+        groupId: testGroup1.id,
+        newDescription: 'Updated Description',
+      );
+
+      final updatedGroup = await database.groupDao.getGroupById(
+        groupId: testGroup1.id,
+      );
+      expect(updatedGroup.name, 'Updated Name');
+      expect(updatedGroup.description, 'Updated Description');
+      expect(updatedGroup.members.length, testGroup1.members.length);
+    });
+
+    // Verifies that addGroupsAsList with duplicate groups only adds unique ones.
+    test('addGroupsAsList with duplicate groups only adds once', () async {
+      await database.groupDao.addGroupsAsList(
+        groups: [testGroup1, testGroup1, testGroup1],
+      );
+
+      final allGroups = await database.groupDao.getAllGroups();
+      expect(allGroups.length, 1);
+    });
   });
 }

test/db_tests/match_test.dart

@@ -0,0 +1,287 @@
+import 'package:clock/clock.dart';
+import 'package:drift/drift.dart';
+import 'package:drift/native.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
+import 'package:game_tracker/data/dto/group.dart';
+import 'package:game_tracker/data/dto/match.dart';
+import 'package:game_tracker/data/dto/player.dart';
+
+void main() {
+  late AppDatabase database;
+  late Player testPlayer1;
+  late Player testPlayer2;
+  late Player testPlayer3;
+  late Player testPlayer4;
+  late Player testPlayer5;
+  late Group testGroup1;
+  late Group testGroup2;
+  late Game testGame;
+  late Match testMatch1;
+  late Match testMatch2;
+  late Match testMatchOnlyPlayers;
+  late Match testMatchOnlyGroup;
+  final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
+  final fakeClock = Clock(() => fixedDate);
+
+  setUp(() async {
+    database = AppDatabase(
+      DatabaseConnection(
+        NativeDatabase.memory(),
+        // Recommended for widget tests to avoid test errors.
+        closeStreamsSynchronously: true,
+      ),
+    );
+
+    withClock(fakeClock, () {
+      testPlayer1 = Player(name: 'Alice');
+      testPlayer2 = Player(name: 'Bob');
+      testPlayer3 = Player(name: 'Charlie');
+      testPlayer4 = Player(name: 'Diana');
+      testPlayer5 = Player(name: 'Eve');
+      testGroup1 = Group(
+        name: 'Test Group 2',
+        members: [testPlayer1, testPlayer2, testPlayer3],
+      );
+      testGroup2 = Group(
+        name: 'Test Group 2',
+        members: [testPlayer4, testPlayer5],
+      );
+      testGame = Game(name: 'Test Game');
+      testMatch1 = Match(
+        name: 'First Test Match',
+        game: testGame,
+        group: testGroup1,
+        players: [testPlayer4, testPlayer5],
+        winner: testPlayer4,
+      );
+      testMatch2 = Match(
+        name: 'Second Test Match',
+        game: testGame,
+        group: testGroup2,
+        players: [testPlayer1, testPlayer2, testPlayer3],
+        winner: testPlayer2,
+      );
+      testMatchOnlyPlayers = Match(
+        name: 'Test Match with Players',
+        game: testGame,
+        players: [testPlayer1, testPlayer2, testPlayer3],
+        winner: testPlayer3,
+      );
+      testMatchOnlyGroup = Match(
+        name: 'Test Match with Group',
+        game: testGame,
+        group: testGroup2,
+      );
+    });
+    await database.playerDao.addPlayersAsList(
+      players: [
+        testPlayer1,
+        testPlayer2,
+        testPlayer3,
+        testPlayer4,
+        testPlayer5,
+      ],
+    );
+    await database.groupDao.addGroupsAsList(groups: [testGroup1, testGroup2]);
+    await database.gameDao.addGame(game: testGame);
+  });
+  tearDown(() async {
+    await database.close();
+  });
+
+  group('Match Tests', () {
+
+    // Verifies that a single match can be added and retrieved with all fields, group, and players intact.
+    test('Adding and fetching single match works correctly', () async {
+      await database.matchDao.addMatch(match: testMatch1);
+
+      final result = await database.matchDao.getMatchById(
+        matchId: testMatch1.id,
+      );
+
+      expect(result.id, testMatch1.id);
+      expect(result.name, testMatch1.name);
+      expect(result.createdAt, testMatch1.createdAt);
+
+      if (result.group != null) {
+        expect(result.group!.members.length, testGroup1.members.length);
+
+        for (int i = 0; i < testGroup1.members.length; i++) {
+          expect(result.group!.members[i].id, testGroup1.members[i].id);
+          expect(result.group!.members[i].name, testGroup1.members[i].name);
+        }
+      } else {
+        fail('Group is null');
+      }
+      if (result.players != null) {
+        expect(result.players!.length, testMatch1.players!.length);
+
+        for (int i = 0; i < testMatch1.players!.length; i++) {
+          expect(result.players![i].id, testMatch1.players![i].id);
+          expect(result.players![i].name, testMatch1.players![i].name);
+          expect(
+            result.players![i].createdAt,
+            testMatch1.players![i].createdAt,
+          );
+        }
+      } else {
+        fail('Players is null');
+      }
+    });
+
+    // Verifies that multiple matches can be added and retrieved with correct groups and players.
+    test('Adding and fetching multiple matches works correctly', () async {
+      await database.matchDao.addMatchAsList(
+        matches: [
+          testMatch1,
+          testMatch2,
+          testMatchOnlyGroup,
+          testMatchOnlyPlayers,
+        ],
+      );
+
+      final allMatches = await database.matchDao.getAllMatches();
+      expect(allMatches.length, 4);
+
+      final testMatches = {
+        testMatch1.id: testMatch1,
+        testMatch2.id: testMatch2,
+        testMatchOnlyGroup.id: testMatchOnlyGroup,
+        testMatchOnlyPlayers.id: testMatchOnlyPlayers,
+      };
+
+      for (final match in allMatches) {
+        final testMatch = testMatches[match.id]!;
+
+        // Match-Checks
+        expect(match.id, testMatch.id);
+        expect(match.name, testMatch.name);
+        expect(match.createdAt, testMatch.createdAt);
+
+        // Group-Checks
+        if (testMatch.group != null) {
+          expect(match.group!.id, testMatch.group!.id);
+          expect(match.group!.name, testMatch.group!.name);
+          expect(match.group!.createdAt, testMatch.group!.createdAt);
+
+          // Group Members-Checks
+          expect(match.group!.members.length, testMatch.group!.members.length);
+          for (int i = 0; i < testMatch.group!.members.length; i++) {
+            expect(match.group!.members[i].id, testMatch.group!.members[i].id);
+            expect(
+              match.group!.members[i].name,
+              testMatch.group!.members[i].name,
+            );
+            expect(
+              match.group!.members[i].createdAt,
+              testMatch.group!.members[i].createdAt,
+            );
+          }
+        } else {
+          expect(match.group, null);
+        }
+
+        // Players-Checks
+        if (testMatch.players != null) {
+          expect(match.players!.length, testMatch.players!.length);
+          for (int i = 0; i < testMatch.players!.length; i++) {
+            expect(match.players![i].id, testMatch.players![i].id);
+            expect(match.players![i].name, testMatch.players![i].name);
+            expect(
+              match.players![i].createdAt,
+              testMatch.players![i].createdAt,
+            );
+          }
+        } else {
+          expect(match.players, null);
+        }
+      }
+    });
+
+    // Verifies that adding the same match twice does not create duplicates.
+    test('Adding the same match twice does not create duplicates', () async {
+      await database.matchDao.addMatch(match: testMatch1);
+      await database.matchDao.addMatch(match: testMatch1);
+
+      final matchCount = await database.matchDao.getMatchCount();
+      expect(matchCount, 1);
+    });
+
+    // Verifies that matchExists returns correct boolean based on match presence.
+    test('Match existence check works correctly', () async {
+      var matchExists = await database.matchDao.matchExists(
+        matchId: testMatch1.id,
+      );
+      expect(matchExists, false);
+
+      await database.matchDao.addMatch(match: testMatch1);
+
+      matchExists = await database.matchDao.matchExists(matchId: testMatch1.id);
+      expect(matchExists, true);
+    });
+
+    // Verifies that deleteMatch removes the match and returns true.
+    test('Deleting a match works correctly', () async {
+      await database.matchDao.addMatch(match: testMatch1);
+
+      final matchDeleted = await database.matchDao.deleteMatch(
+        matchId: testMatch1.id,
+      );
+      expect(matchDeleted, true);
+
+      final matchExists = await database.matchDao.matchExists(
+        matchId: testMatch1.id,
+      );
+      expect(matchExists, false);
+    });
+
+    // Verifies that getMatchCount returns correct count through add/delete operations.
+    test('Getting the match count works correctly', () async {
+      var matchCount = await database.matchDao.getMatchCount();
+      expect(matchCount, 0);
+
+      await database.matchDao.addMatch(match: testMatch1);
+
+      matchCount = await database.matchDao.getMatchCount();
+      expect(matchCount, 1);
+
+      await database.matchDao.addMatch(match: testMatch2);
+
+      matchCount = await database.matchDao.getMatchCount();
+      expect(matchCount, 2);
+
+      await database.matchDao.deleteMatch(matchId: testMatch1.id);
+
+      matchCount = await database.matchDao.getMatchCount();
+      expect(matchCount, 1);
+
+      await database.matchDao.deleteMatch(matchId: testMatch2.id);
+
+      matchCount = await database.matchDao.getMatchCount();
+      expect(matchCount, 0);
+    });
+
+    // Verifies that updateMatchName correctly updates only the name field.
+    test('Renaming a match works correctly', () async {
+      await database.matchDao.addMatch(match: testMatch1);
+
+      var fetchedMatch = await database.matchDao.getMatchById(
+        matchId: testMatch1.id,
+      );
+      expect(fetchedMatch.name, testMatch1.name);
+
+      const newName = 'Updated Match Name';
+      await database.matchDao.updateMatchName(
+        matchId: testMatch1.id,
+        newName: newName,
+      );
+
+      fetchedMatch = await database.matchDao.getMatchById(
+        matchId: testMatch1.id,
+      );
+      expect(fetchedMatch.name, newName);
+    });
+  });
+}

test/db_tests/player_group_test.dart

@@ -12,7 +12,7 @@ void main() {
   late Player testPlayer2;
   late Player testPlayer3;
   late Player testPlayer4;
-  late Group testgroup;
+  late Group testGroup;
   final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
   final fakeClock = Clock(() => fixedDate);
 
@@ -30,7 +30,7 @@ void main() {
       testPlayer2 = Player(name: 'Bob');
       testPlayer3 = Player(name: 'Charlie');
       testPlayer4 = Player(name: 'Diana');
-      testgroup = Group(
+      testGroup = Group(
         name: 'Test Group',
         members: [testPlayer1, testPlayer2, testPlayer3],
       );
@@ -41,63 +41,271 @@ void main() {
   });
 
   group('Player-Group Tests', () {
-    /// No need to test if group has players since the members attribute is
-    /// not nullable
 
+    // Verifies that a player can be added to an existing group and isPlayerInGroup returns true.
     test('Adding a player to a group works correctly', () async {
-      await database.groupDao.addGroup(group: testgroup);
+      await database.groupDao.addGroup(group: testGroup);
       await database.playerDao.addPlayer(player: testPlayer4);
       await database.playerGroupDao.addPlayerToGroup(
-        groupId: testgroup.id,
+        groupId: testGroup.id,
         player: testPlayer4,
       );
 
       var playerAdded = await database.playerGroupDao.isPlayerInGroup(
-        groupId: testgroup.id,
+        groupId: testGroup.id,
         playerId: testPlayer4.id,
       );
 
       expect(playerAdded, true);
 
       playerAdded = await database.playerGroupDao.isPlayerInGroup(
-        groupId: testgroup.id,
+        groupId: testGroup.id,
         playerId: '',
       );
 
       expect(playerAdded, false);
     });
 
+    // Verifies that a player can be removed from a group and the group's member count decreases.
     test('Removing player from group works correctly', () async {
-      await database.groupDao.addGroup(group: testgroup);
+      await database.groupDao.addGroup(group: testGroup);
 
-      final playerToRemove = testgroup.members[0];
+      final playerToRemove = testGroup.members[0];
 
       final removed = await database.playerGroupDao.removePlayerFromGroup(
         playerId: playerToRemove.id,
-        groupId: testgroup.id,
+        groupId: testGroup.id,
       );
       expect(removed, true);
 
       final result = await database.groupDao.getGroupById(
-        groupId: testgroup.id,
+        groupId: testGroup.id,
       );
-      expect(result.members.length, testgroup.members.length - 1);
+      expect(result.members.length, testGroup.members.length - 1);
 
       final playerExists = result.members.any((p) => p.id == playerToRemove.id);
       expect(playerExists, false);
     });
 
+    // Verifies that getPlayersOfGroup returns all members of a group with correct data.
     test('Retrieving players of a group works correctly', () async {
-      await database.groupDao.addGroup(group: testgroup);
+      await database.groupDao.addGroup(group: testGroup);
       final players = await database.playerGroupDao.getPlayersOfGroup(
-        groupId: testgroup.id,
+        groupId: testGroup.id,
       );
 
       for (int i = 0; i < players.length; i++) {
-        expect(players[i].id, testgroup.members[i].id);
-        expect(players[i].name, testgroup.members[i].name);
-        expect(players[i].createdAt, testgroup.members[i].createdAt);
+        expect(players[i].id, testGroup.members[i].id);
+        expect(players[i].name, testGroup.members[i].name);
+        expect(players[i].createdAt, testGroup.members[i].createdAt);
       }
     });
+
+    // Verifies that isPlayerInGroup returns false for non-existent player.
+    test('isPlayerInGroup returns false for non-existent player', () async {
+      await database.groupDao.addGroup(group: testGroup);
+
+      final result = await database.playerGroupDao.isPlayerInGroup(
+        playerId: 'non-existent-player-id',
+        groupId: testGroup.id,
+      );
+
+      expect(result, false);
+    });
+
+    // Verifies that isPlayerInGroup returns false for non-existent group.
+    test('isPlayerInGroup returns false for non-existent group', () async {
+      await database.playerDao.addPlayer(player: testPlayer1);
+
+      final result = await database.playerGroupDao.isPlayerInGroup(
+        playerId: testPlayer1.id,
+        groupId: 'non-existent-group-id',
+      );
+
+      expect(result, false);
+    });
+
+    // Verifies that addPlayerToGroup returns false when player already in group.
+    test('addPlayerToGroup returns false when player already in group', () async {
+      await database.groupDao.addGroup(group: testGroup);
+
+      // testPlayer1 is already in testGroup via group creation
+      final result = await database.playerGroupDao.addPlayerToGroup(
+        player: testPlayer1,
+        groupId: testGroup.id,
+      );
+
+      expect(result, false);
+    });
+
+    // Verifies that addPlayerToGroup adds player to player table if not exists.
+    test('addPlayerToGroup adds player to player table if not exists', () async {
+      await database.groupDao.addGroup(group: testGroup);
+
+      // testPlayer4 is not in the database yet
+      var playerExists = await database.playerDao.playerExists(
+        playerId: testPlayer4.id,
+      );
+      expect(playerExists, false);
+
+      await database.playerGroupDao.addPlayerToGroup(
+        player: testPlayer4,
+        groupId: testGroup.id,
+      );
+
+      // Now player should exist in player table
+      playerExists = await database.playerDao.playerExists(
+        playerId: testPlayer4.id,
+      );
+      expect(playerExists, true);
+    });
+
+    // Verifies that removePlayerFromGroup returns false for non-existent player.
+    test('removePlayerFromGroup returns false for non-existent player', () async {
+      await database.groupDao.addGroup(group: testGroup);
+
+      final result = await database.playerGroupDao.removePlayerFromGroup(
+        playerId: 'non-existent-player-id',
+        groupId: testGroup.id,
+      );
+
+      expect(result, false);
+    });
+
+    // Verifies that removePlayerFromGroup returns false for non-existent group.
+    test('removePlayerFromGroup returns false for non-existent group', () async {
+      await database.playerDao.addPlayer(player: testPlayer1);
+
+      final result = await database.playerGroupDao.removePlayerFromGroup(
+        playerId: testPlayer1.id,
+        groupId: 'non-existent-group-id',
+      );
+
+      expect(result, false);
+    });
+
+    // Verifies that getPlayersOfGroup returns empty list for group with no members.
+    test('getPlayersOfGroup returns empty list for empty group', () async {
+      final emptyGroup = Group(name: 'Empty Group', members: []);
+      await database.groupDao.addGroup(group: emptyGroup);
+
+      final players = await database.playerGroupDao.getPlayersOfGroup(
+        groupId: emptyGroup.id,
+      );
+
+      expect(players, isEmpty);
+    });
+
+    // Verifies that getPlayersOfGroup returns empty list for non-existent group.
+    test('getPlayersOfGroup returns empty list for non-existent group', () async {
+      final players = await database.playerGroupDao.getPlayersOfGroup(
+        groupId: 'non-existent-group-id',
+      );
+
+      expect(players, isEmpty);
+    });
+
+    // Verifies that removing all players from a group leaves the group empty.
+    test('Removing all players from a group leaves group empty', () async {
+      await database.groupDao.addGroup(group: testGroup);
+
+      for (final player in testGroup.members) {
+        await database.playerGroupDao.removePlayerFromGroup(
+          playerId: player.id,
+          groupId: testGroup.id,
+        );
+      }
+
+      final players = await database.playerGroupDao.getPlayersOfGroup(
+        groupId: testGroup.id,
+      );
+      expect(players, isEmpty);
+
+      // Group should still exist
+      final groupExists = await database.groupDao.groupExists(
+        groupId: testGroup.id,
+      );
+      expect(groupExists, true);
+    });
+
+    // Verifies that a player can be in multiple groups.
+    test('Player can be in multiple groups', () async {
+      final secondGroup = Group(name: 'Second Group', members: []);
+      await database.groupDao.addGroup(group: testGroup);
+      await database.groupDao.addGroup(group: secondGroup);
+
+      // Add testPlayer1 to second group (already in testGroup)
+      await database.playerGroupDao.addPlayerToGroup(
+        player: testPlayer1,
+        groupId: secondGroup.id,
+      );
+
+      final inFirstGroup = await database.playerGroupDao.isPlayerInGroup(
+        playerId: testPlayer1.id,
+        groupId: testGroup.id,
+      );
+      final inSecondGroup = await database.playerGroupDao.isPlayerInGroup(
+        playerId: testPlayer1.id,
+        groupId: secondGroup.id,
+      );
+
+      expect(inFirstGroup, true);
+      expect(inSecondGroup, true);
+    });
+
+    // Verifies that removing player from one group doesn't affect other groups.
+    test('Removing player from one group does not affect other groups', () async {
+      final secondGroup = Group(name: 'Second Group', members: [testPlayer1]);
+      await database.groupDao.addGroup(group: testGroup);
+      await database.groupDao.addGroup(group: secondGroup);
+
+      // Remove testPlayer1 from testGroup
+      await database.playerGroupDao.removePlayerFromGroup(
+        playerId: testPlayer1.id,
+        groupId: testGroup.id,
+      );
+
+      final inFirstGroup = await database.playerGroupDao.isPlayerInGroup(
+        playerId: testPlayer1.id,
+        groupId: testGroup.id,
+      );
+      final inSecondGroup = await database.playerGroupDao.isPlayerInGroup(
+        playerId: testPlayer1.id,
+        groupId: secondGroup.id,
+      );
+
+      expect(inFirstGroup, false);
+      expect(inSecondGroup, true);
+    });
+
+    // Verifies that addPlayerToGroup returns true on successful addition.
+    test('addPlayerToGroup returns true on successful addition', () async {
+      await database.groupDao.addGroup(group: testGroup);
+      await database.playerDao.addPlayer(player: testPlayer4);
+
+      final result = await database.playerGroupDao.addPlayerToGroup(
+        player: testPlayer4,
+        groupId: testGroup.id,
+      );
+
+      expect(result, true);
+    });
+
+    // Verifies that removing the same player twice returns false on second attempt.
+    test('Removing same player twice returns false on second attempt', () async {
+      await database.groupDao.addGroup(group: testGroup);
+
+      final firstRemoval = await database.playerGroupDao.removePlayerFromGroup(
+        playerId: testPlayer1.id,
+        groupId: testGroup.id,
+      );
+      expect(firstRemoval, true);
+
+      final secondRemoval = await database.playerGroupDao.removePlayerFromGroup(
+        playerId: testPlayer1.id,
+        groupId: testGroup.id,
+      );
+      expect(secondRemoval, false);
+    });
   });
 }

test/db_tests/player_match_test.dart

@@ -1,11 +1,13 @@
 import 'package:clock/clock.dart';
-import 'package:drift/drift.dart' hide isNotNull;
+import 'package:drift/drift.dart' hide isNotNull, isNull;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/match.dart';
 import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/data/dto/team.dart';
 
 void main() {
   late AppDatabase database;
@@ -15,10 +17,13 @@ void main() {
   late Player testPlayer4;
   late Player testPlayer5;
   late Player testPlayer6;
-  late Group testgroup;
+  late Group testGroup;
+  late Game testGame;
   late Match testMatchOnlyGroup;
   late Match testMatchOnlyPlayers;
-  final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
+  late Team testTeam1;
+  late Team testTeam2;
+  final fixedDate = DateTime(2025, 11, 19, 00, 11, 23);
   final fakeClock = Clock(() => fixedDate);
 
   setUp(() async {
@@ -37,18 +42,29 @@ void main() {
       testPlayer4 = Player(name: 'Diana');
       testPlayer5 = Player(name: 'Eve');
       testPlayer6 = Player(name: 'Frank');
-      testgroup = Group(
+      testGroup = Group(
         name: 'Test Group',
         members: [testPlayer1, testPlayer2, testPlayer3],
       );
+      testGame = Game(name: 'Test Game');
       testMatchOnlyGroup = Match(
         name: 'Test Match with Group',
-        group: testgroup,
+        game: testGame,
+        group: testGroup,
       );
       testMatchOnlyPlayers = Match(
         name: 'Test Match with Players',
+        game: testGame,
         players: [testPlayer4, testPlayer5, testPlayer6],
       );
+      testTeam1 = Team(
+        name: 'Team Alpha',
+        members: [testPlayer1, testPlayer2],
+      );
+      testTeam2 = Team(
+        name: 'Team Beta',
+        members: [testPlayer3, testPlayer4],
+      );
     });
     await database.playerDao.addPlayersAsList(
       players: [
@@ -60,13 +76,16 @@ void main() {
         testPlayer6,
       ],
     );
-    await database.groupDao.addGroup(group: testgroup);
+    await database.groupDao.addGroup(group: testGroup);
+    await database.gameDao.addGame(game: testGame);
   });
   tearDown(() async {
     await database.close();
   });
 
   group('Player-Match Tests', () {
+
+    // Verifies that matchHasPlayers returns false initially and true after adding a player.
     test('Match has player works correctly', () async {
       await database.matchDao.addMatch(match: testMatchOnlyGroup);
       await database.playerDao.addPlayer(player: testPlayer1);
@@ -89,6 +108,7 @@ void main() {
       expect(matchHasPlayers, true);
     });
 
+    // Verifies that a player can be added to a match and isPlayerInMatch returns true.
     test('Adding a player to a match works correctly', () async {
       await database.matchDao.addMatch(match: testMatchOnlyGroup);
       await database.playerDao.addPlayer(player: testPlayer5);
@@ -112,6 +132,7 @@ void main() {
       expect(playerAdded, false);
     });
 
+    // Verifies that a player can be removed from a match and the player count decreases.
     test('Removing player from match works correctly', () async {
       await database.matchDao.addMatch(match: testMatchOnlyPlayers);
 
@@ -134,6 +155,7 @@ void main() {
       expect(playerExists, false);
     });
 
+    // Verifies that getPlayersOfMatch returns all players of a match with correct data.
     test('Retrieving players of a match works correctly', () async {
       await database.matchDao.addMatch(match: testMatchOnlyPlayers);
       final players = await database.playerMatchDao.getPlayersOfMatch(
@@ -154,7 +176,8 @@ void main() {
       }
     });
 
-    test('Updating the match players works coreclty', () async {
+    // Verifies that updatePlayersFromMatch replaces all existing players with new ones.
+    test('Updating the match players works correctly', () async {
       await database.matchDao.addMatch(match: testMatchOnlyPlayers);
 
       final newPlayers = [testPlayer1, testPlayer2, testPlayer4];
@@ -197,12 +220,13 @@ void main() {
       }
     });
 
+    // Verifies that the same player can be added to multiple different matches.
     test(
-      'Adding the same player to seperate matches works correctly',
+      'Adding the same player to separate matches works correctly',
       () async {
         final playersList = [testPlayer1, testPlayer2, testPlayer3];
-        final match1 = Match(name: 'Match 1', players: playersList);
-        final match2 = Match(name: 'Match 2', players: playersList);
+        final match1 = Match(name: 'Match 1', game: testGame, players: playersList);
+        final match2 = Match(name: 'Match 2', game: testGame, players: playersList);
 
         await Future.wait([
           database.matchDao.addMatch(match: match1),
@@ -233,5 +257,628 @@ void main() {
         );
       },
     );
+
+    // Verifies that getPlayersOfMatch returns null for a non-existent match.
+    test('getPlayersOfMatch returns null for non-existent match', () async {
+      final players = await database.playerMatchDao.getPlayersOfMatch(
+        matchId: 'non-existent-match-id',
+      );
+
+      expect(players, isNull);
+    });
+
+    // Verifies that adding a player with initial score works correctly.
+    test('Adding player with initial score works correctly', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        score: 100,
+      );
+
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+      );
+
+      expect(score, 100);
+    });
+
+    // Verifies that getPlayerScore returns the correct score.
+    test('getPlayerScore returns correct score', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      // Default score should be 0 when added through match
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+      );
+
+      expect(score, 0);
+    });
+
+    // Verifies that getPlayerScore returns null for non-existent player-match combination.
+    test('getPlayerScore returns null for non-existent player in match', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyGroup.id,
+        playerId: 'non-existent-player-id',
+      );
+
+      expect(score, isNull);
+    });
+
+    // Verifies that updatePlayerScore updates the score correctly.
+    test('updatePlayerScore updates score correctly', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      final updated = await database.playerMatchDao.updatePlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+        newScore: 50,
+      );
+
+      expect(updated, true);
+
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+      );
+
+      expect(score, 50);
+    });
+
+    // Verifies that updatePlayerScore returns false for non-existent player-match.
+    test('updatePlayerScore returns false for non-existent player-match', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+
+      final updated = await database.playerMatchDao.updatePlayerScore(
+        matchId: testMatchOnlyGroup.id,
+        playerId: 'non-existent-player-id',
+        newScore: 50,
+      );
+
+      expect(updated, false);
+    });
+
+    // Verifies that adding a player with teamId works correctly.
+    test('Adding player with teamId works correctly', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam1.id,
+      );
+
+      final playersInTeam = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+
+      expect(playersInTeam.length, 1);
+      expect(playersInTeam[0].id, testPlayer1.id);
+    });
+
+    // Verifies that updatePlayerTeam updates the team correctly.
+    test('updatePlayerTeam updates team correctly', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+      await database.teamDao.addTeam(team: testTeam2);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam1.id,
+      );
+
+      // Update player's team
+      final updated = await database.playerMatchDao.updatePlayerTeam(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam2.id,
+      );
+
+      expect(updated, true);
+
+      // Verify player is now in testTeam2
+      final playersInTeam2 = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam2.id,
+      );
+
+      expect(playersInTeam2.length, 1);
+      expect(playersInTeam2[0].id, testPlayer1.id);
+
+      // Verify player is no longer in testTeam1
+      final playersInTeam1 = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+
+      expect(playersInTeam1.isEmpty, true);
+    });
+
+    // Verifies that updatePlayerTeam can set team to null.
+    test('updatePlayerTeam can remove player from team', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam1.id,
+      );
+
+      // Remove player from team by setting teamId to null
+      final updated = await database.playerMatchDao.updatePlayerTeam(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: null,
+      );
+
+      expect(updated, true);
+
+      final playersInTeam = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+
+      expect(playersInTeam.isEmpty, true);
+    });
+
+    // Verifies that updatePlayerTeam returns false for non-existent player-match.
+    test('updatePlayerTeam returns false for non-existent player-match', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+
+      final updated = await database.playerMatchDao.updatePlayerTeam(
+        matchId: testMatchOnlyGroup.id,
+        playerId: 'non-existent-player-id',
+        teamId: testTeam1.id,
+      );
+
+      expect(updated, false);
+    });
+
+    // Verifies that getPlayersInTeam returns empty list for non-existent team.
+    test('getPlayersInTeam returns empty list for non-existent team', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      final players = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyPlayers.id,
+        teamId: 'non-existent-team-id',
+      );
+
+      expect(players.isEmpty, true);
+    });
+
+    // Verifies that getPlayersInTeam returns all players of a team.
+    test('getPlayersInTeam returns all players of a team', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam1.id,
+      );
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer2.id,
+        teamId: testTeam1.id,
+      );
+
+      final playersInTeam = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+
+      expect(playersInTeam.length, 2);
+      final playerIds = playersInTeam.map((p) => p.id).toSet();
+      expect(playerIds.contains(testPlayer1.id), true);
+      expect(playerIds.contains(testPlayer2.id), true);
+    });
+
+    // Verifies that removePlayerFromMatch returns false for non-existent player.
+    test('removePlayerFromMatch returns false for non-existent player', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      final removed = await database.playerMatchDao.removePlayerFromMatch(
+        playerId: 'non-existent-player-id',
+        matchId: testMatchOnlyPlayers.id,
+      );
+
+      expect(removed, false);
+    });
+
+    // Verifies that adding the same player twice to the same match is ignored.
+    test('Adding same player twice to same match is ignored', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        score: 10,
+      );
+
+      // Try to add the same player again with different score
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        score: 100,
+      );
+
+      // Score should still be 10 because insert was ignored
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+      );
+
+      expect(score, 10);
+
+      // Verify player count is still 1
+      final players = await database.playerMatchDao.getPlayersOfMatch(
+        matchId: testMatchOnlyGroup.id,
+      );
+
+      expect(players?.length, 1);
+    });
+
+    // Verifies that updatePlayersFromMatch with empty list removes all players.
+    test('updatePlayersFromMatch with empty list removes all players', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      // Verify players exist initially
+      var players = await database.playerMatchDao.getPlayersOfMatch(
+        matchId: testMatchOnlyPlayers.id,
+      );
+      expect(players?.length, 3);
+
+      // Update with empty list
+      await database.playerMatchDao.updatePlayersFromMatch(
+        matchId: testMatchOnlyPlayers.id,
+        newPlayer: [],
+      );
+
+      // Verify all players are removed
+      players = await database.playerMatchDao.getPlayersOfMatch(
+        matchId: testMatchOnlyPlayers.id,
+      );
+      expect(players, isNull);
+    });
+
+    // Verifies that updatePlayersFromMatch with same players makes no changes.
+    test('updatePlayersFromMatch with same players makes no changes', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      final originalPlayers = [testPlayer4, testPlayer5, testPlayer6];
+
+      await database.playerMatchDao.updatePlayersFromMatch(
+        matchId: testMatchOnlyPlayers.id,
+        newPlayer: originalPlayers,
+      );
+
+      final players = await database.playerMatchDao.getPlayersOfMatch(
+        matchId: testMatchOnlyPlayers.id,
+      );
+
+      expect(players?.length, originalPlayers.length);
+      final playerIds = players!.map((p) => p.id).toSet();
+      for (final originalPlayer in originalPlayers) {
+        expect(playerIds.contains(originalPlayer.id), true);
+      }
+    });
+
+    // Verifies that matchHasPlayers returns false for non-existent match.
+    test('matchHasPlayers returns false for non-existent match', () async {
+      final hasPlayers = await database.playerMatchDao.matchHasPlayers(
+        matchId: 'non-existent-match-id',
+      );
+
+      expect(hasPlayers, false);
+    });
+
+    // Verifies that isPlayerInMatch returns false for non-existent match.
+    test('isPlayerInMatch returns false for non-existent match', () async {
+      final isInMatch = await database.playerMatchDao.isPlayerInMatch(
+        matchId: 'non-existent-match-id',
+        playerId: testPlayer1.id,
+      );
+
+      expect(isInMatch, false);
+    });
+
+    // Verifies that updatePlayersFromMatch preserves scores for existing players.
+    test('updatePlayersFromMatch only modifies player associations', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      // Update score for existing player
+      await database.playerMatchDao.updatePlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+        newScore: 75,
+      );
+
+      // Update players, keeping testPlayer4 and adding testPlayer1
+      await database.playerMatchDao.updatePlayersFromMatch(
+        matchId: testMatchOnlyPlayers.id,
+        newPlayer: [testPlayer4, testPlayer1],
+      );
+
+      // Verify testPlayer4's score is preserved
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+      );
+
+      expect(score, 75);
+
+      // Verify testPlayer1 was added with default score
+      final newPlayerScore = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer1.id,
+      );
+
+      expect(newPlayerScore, 0);
+    });
+
+    // Verifies that adding a player with both score and teamId works correctly.
+    test('Adding player with score and teamId works correctly', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam1.id,
+        score: 150,
+      );
+
+      // Verify score
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+      );
+      expect(score, 150);
+
+      // Verify team assignment
+      final playersInTeam = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+      expect(playersInTeam.length, 1);
+      expect(playersInTeam[0].id, testPlayer1.id);
+    });
+
+    // Verifies that updating score with negative value works.
+    test('updatePlayerScore with negative score works', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      final updated = await database.playerMatchDao.updatePlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+        newScore: -10,
+      );
+
+      expect(updated, true);
+
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+      );
+
+      expect(score, -10);
+    });
+
+    // Verifies that updating score with zero value works.
+    test('updatePlayerScore with zero score works', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyPlayers);
+
+      // First set a non-zero score
+      await database.playerMatchDao.updatePlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+        newScore: 100,
+      );
+
+      // Then update to zero
+      final updated = await database.playerMatchDao.updatePlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+        newScore: 0,
+      );
+
+      expect(updated, true);
+
+      final score = await database.playerMatchDao.getPlayerScore(
+        matchId: testMatchOnlyPlayers.id,
+        playerId: testPlayer4.id,
+      );
+
+      expect(score, 0);
+    });
+
+    // Verifies that getPlayersInTeam returns empty list for non-existent match.
+    test('getPlayersInTeam returns empty list for non-existent match', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      final players = await database.playerMatchDao.getPlayersInTeam(
+        matchId: 'non-existent-match-id',
+        teamId: testTeam1.id,
+      );
+
+      expect(players.isEmpty, true);
+    });
+
+    // Verifies that players in different teams within the same match are returned correctly.
+    test('Players in different teams within same match are separate', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+      await database.teamDao.addTeam(team: testTeam2);
+
+      // Add players to different teams
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+        teamId: testTeam1.id,
+      );
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer2.id,
+        teamId: testTeam1.id,
+      );
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer3.id,
+        teamId: testTeam2.id,
+      );
+
+      // Verify team 1 players
+      final playersInTeam1 = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+      expect(playersInTeam1.length, 2);
+      final team1Ids = playersInTeam1.map((p) => p.id).toSet();
+      expect(team1Ids.contains(testPlayer1.id), true);
+      expect(team1Ids.contains(testPlayer2.id), true);
+      expect(team1Ids.contains(testPlayer3.id), false);
+
+      // Verify team 2 players
+      final playersInTeam2 = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam2.id,
+      );
+      expect(playersInTeam2.length, 1);
+      expect(playersInTeam2[0].id, testPlayer3.id);
+    });
+
+    // Verifies that removePlayerFromMatch does not affect other matches.
+    test('removePlayerFromMatch does not affect other matches', () async {
+      final playersList = [testPlayer1, testPlayer2];
+      final match1 = Match(name: 'Match 1', game: testGame, players: playersList);
+      final match2 = Match(name: 'Match 2', game: testGame, players: playersList);
+
+      await Future.wait([
+        database.matchDao.addMatch(match: match1),
+        database.matchDao.addMatch(match: match2),
+      ]);
+
+      // Remove player from match1
+      final removed = await database.playerMatchDao.removePlayerFromMatch(
+        playerId: testPlayer1.id,
+        matchId: match1.id,
+      );
+      expect(removed, true);
+
+      // Verify player is removed from match1
+      final isInMatch1 = await database.playerMatchDao.isPlayerInMatch(
+        matchId: match1.id,
+        playerId: testPlayer1.id,
+      );
+      expect(isInMatch1, false);
+
+      // Verify player still exists in match2
+      final isInMatch2 = await database.playerMatchDao.isPlayerInMatch(
+        matchId: match2.id,
+        playerId: testPlayer1.id,
+      );
+      expect(isInMatch2, true);
+    });
+
+    // Verifies that updating scores for players in different matches are independent.
+    test('Player scores are independent across matches', () async {
+      final playersList = [testPlayer1];
+      final match1 = Match(name: 'Match 1', game: testGame, players: playersList);
+      final match2 = Match(name: 'Match 2', game: testGame, players: playersList);
+
+      await Future.wait([
+        database.matchDao.addMatch(match: match1),
+        database.matchDao.addMatch(match: match2),
+      ]);
+
+      // Update score in match1
+      await database.playerMatchDao.updatePlayerScore(
+        matchId: match1.id,
+        playerId: testPlayer1.id,
+        newScore: 100,
+      );
+
+      // Update score in match2
+      await database.playerMatchDao.updatePlayerScore(
+        matchId: match2.id,
+        playerId: testPlayer1.id,
+        newScore: 50,
+      );
+
+      // Verify scores are independent
+      final scoreInMatch1 = await database.playerMatchDao.getPlayerScore(
+        matchId: match1.id,
+        playerId: testPlayer1.id,
+      );
+      final scoreInMatch2 = await database.playerMatchDao.getPlayerScore(
+        matchId: match2.id,
+        playerId: testPlayer1.id,
+      );
+
+      expect(scoreInMatch1, 100);
+      expect(scoreInMatch2, 50);
+    });
+
+    // Verifies that updatePlayersFromMatch on non-existent match fails with constraint error.
+    test('updatePlayersFromMatch on non-existent match fails with foreign key constraint', () async {
+      // Should throw due to foreign key constraint - match doesn't exist
+      await expectLater(
+        database.playerMatchDao.updatePlayersFromMatch(
+          matchId: 'non-existent-match-id',
+          newPlayer: [testPlayer1, testPlayer2],
+        ),
+        throwsA(anything),
+      );
+    });
+
+    // Verifies that a player can be in a match without being assigned to a team.
+    test('Player can exist in match without team assignment', () async {
+      await database.matchDao.addMatch(match: testMatchOnlyGroup);
+      await database.teamDao.addTeam(team: testTeam1);
+
+      // Add player to match without team
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+      );
+
+      // Add another player to match with team
+      await database.playerMatchDao.addPlayerToMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer2.id,
+        teamId: testTeam1.id,
+      );
+
+      // Verify both players are in the match
+      final isPlayer1InMatch = await database.playerMatchDao.isPlayerInMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer1.id,
+      );
+      final isPlayer2InMatch = await database.playerMatchDao.isPlayerInMatch(
+        matchId: testMatchOnlyGroup.id,
+        playerId: testPlayer2.id,
+      );
+
+      expect(isPlayer1InMatch, true);
+      expect(isPlayer2InMatch, true);
+
+      // Verify only player2 is in the team
+      final playersInTeam = await database.playerMatchDao.getPlayersInTeam(
+        matchId: testMatchOnlyGroup.id,
+        teamId: testTeam1.id,
+      );
+
+      expect(playersInTeam.length, 1);
+      expect(playersInTeam[0].id, testPlayer2.id);
+    });
   });
 }

test/db_tests/player_test.dart

@@ -1,5 +1,5 @@
 import 'package:clock/clock.dart';
-import 'package:drift/drift.dart';
+import 'package:drift/drift.dart' hide isNull;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_tracker/data/db/database.dart';
@@ -35,6 +35,8 @@ void main() {
   });
 
   group('Player Tests', () {
+
+    // Verifies that players can be added and retrieved with all fields intact.
     test('Adding and fetching single player works correctly', () async {
       await database.playerDao.addPlayer(player: testPlayer1);
       await database.playerDao.addPlayer(player: testPlayer2);
@@ -55,6 +57,7 @@ void main() {
       expect(fetchedPlayer2.createdAt, testPlayer2.createdAt);
     });
 
+    // Verifies that multiple players can be added at once and retrieved correctly.
     test('Adding and fetching multiple players works correctly', () async {
       await database.playerDao.addPlayersAsList(
         players: [testPlayer1, testPlayer2, testPlayer3, testPlayer4],
@@ -63,7 +66,7 @@ void main() {
       final allPlayers = await database.playerDao.getAllPlayers();
       expect(allPlayers.length, 4);
 
-      // Map for connencting fetched players with expected players
+      // Map for connecting fetched players with expected players
       final testPlayers = {
         testPlayer1.id: testPlayer1,
         testPlayer2.id: testPlayer2,
@@ -80,6 +83,7 @@ void main() {
       }
     });
 
+    // Verifies that adding the same player twice does not create duplicates.
     test('Adding the same player twice does not create duplicates', () async {
       await database.playerDao.addPlayer(player: testPlayer1);
       await database.playerDao.addPlayer(player: testPlayer1);
@@ -88,6 +92,7 @@ void main() {
       expect(allPlayers.length, 1);
     });
 
+    // Verifies that playerExists returns correct boolean based on player presence.
     test('Player existence check works correctly', () async {
       var playerExists = await database.playerDao.playerExists(
         playerId: testPlayer1.id,
@@ -102,6 +107,7 @@ void main() {
       expect(playerExists, true);
     });
 
+    // Verifies that deletePlayer removes the player and returns true.
     test('Deleting a player works correctly', () async {
       await database.playerDao.addPlayer(player: testPlayer1);
       final playerDeleted = await database.playerDao.deletePlayer(
@@ -115,12 +121,13 @@ void main() {
       expect(playerExists, false);
     });
 
-    test('Updating a player name works correcly', () async {
+    // Verifies that updatePlayerName correctly updates only the name field.
+    test('Updating a player name works correctly', () async {
       await database.playerDao.addPlayer(player: testPlayer1);
 
       const newPlayerName = 'new player name';
 
-      await database.playerDao.updatePlayername(
+      await database.playerDao.updatePlayerName(
         playerId: testPlayer1.id,
         newName: newPlayerName,
       );
@@ -131,6 +138,7 @@ void main() {
       expect(result.name, newPlayerName);
     });
 
+    // Verifies that getPlayerCount returns correct count through add/delete operations.
     test('Getting the player count works correctly', () async {
       var playerCount = await database.playerDao.getPlayerCount();
       expect(playerCount, 0);
@@ -155,5 +163,215 @@ void main() {
       playerCount = await database.playerDao.getPlayerCount();
       expect(playerCount, 0);
     });
+
+    // Verifies that getAllPlayers returns an empty list when no players exist.
+    test('getAllPlayers returns empty list when no players exist', () async {
+      final allPlayers = await database.playerDao.getAllPlayers();
+      expect(allPlayers, isEmpty);
+    });
+
+    // Verifies that getPlayerById returns the correct player.
+    test('getPlayerById returns correct player', () async {
+      await database.playerDao.addPlayer(player: testPlayer1);
+      await database.playerDao.addPlayer(player: testPlayer2);
+
+      final fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: testPlayer1.id,
+      );
+
+      expect(fetchedPlayer.id, testPlayer1.id);
+      expect(fetchedPlayer.name, testPlayer1.name);
+      expect(fetchedPlayer.createdAt, testPlayer1.createdAt);
+      expect(fetchedPlayer.description, testPlayer1.description);
+    });
+
+    // Verifies that getPlayerById throws StateError for non-existent player ID.
+    test('getPlayerById throws exception for non-existent player', () async {
+      expect(
+        () => database.playerDao.getPlayerById(playerId: 'non-existent-id'),
+        throwsA(isA<StateError>()),
+      );
+    });
+
+    // Verifies that addPlayer returns false when trying to add a duplicate player.
+    test('addPlayer returns false when player already exists', () async {
+      final firstAdd = await database.playerDao.addPlayer(player: testPlayer1);
+      expect(firstAdd, true);
+
+      final secondAdd = await database.playerDao.addPlayer(player: testPlayer1);
+      expect(secondAdd, false);
+    });
+
+    // Verifies that addPlayersAsList handles empty list correctly.
+    test('addPlayersAsList handles empty list correctly', () async {
+      final result = await database.playerDao.addPlayersAsList(players: []);
+      expect(result, false);
+
+      final allPlayers = await database.playerDao.getAllPlayers();
+      expect(allPlayers, isEmpty);
+    });
+
+    // Verifies that addPlayersAsList ignores duplicate player IDs.
+    test('addPlayersAsList with duplicate IDs ignores duplicates', () async {
+      await database.playerDao.addPlayersAsList(
+        players: [testPlayer1, testPlayer1, testPlayer2],
+      );
+
+      final allPlayers = await database.playerDao.getAllPlayers();
+      expect(allPlayers.length, 2);
+    });
+
+    // Verifies that deletePlayer returns false for non-existent player.
+    test('deletePlayer returns false for non-existent player', () async {
+      final result = await database.playerDao.deletePlayer(
+        playerId: 'non-existent-id',
+      );
+      expect(result, false);
+    });
+
+    // Verifies that updatePlayerName does nothing for non-existent player (no exception).
+    test('updatePlayerName does nothing for non-existent player', () async {
+      // Should not throw, just do nothing
+      await database.playerDao.updatePlayerName(
+        playerId: 'non-existent-id',
+        newName: 'New Name',
+      );
+
+      final allPlayers = await database.playerDao.getAllPlayers();
+      expect(allPlayers, isEmpty);
+    });
+
+    // Verifies that deleteAllPlayers removes all players.
+    test('deleteAllPlayers removes all players', () async {
+      await database.playerDao.addPlayersAsList(
+        players: [testPlayer1, testPlayer2, testPlayer3],
+      );
+
+      var playerCount = await database.playerDao.getPlayerCount();
+      expect(playerCount, 3);
+
+      final result = await database.playerDao.deleteAllPlayers();
+      expect(result, true);
+
+      playerCount = await database.playerDao.getPlayerCount();
+      expect(playerCount, 0);
+    });
+
+    // Verifies that deleteAllPlayers returns false when no players exist.
+    test('deleteAllPlayers returns false when no players exist', () async {
+      final result = await database.playerDao.deleteAllPlayers();
+      expect(result, false);
+    });
+
+    // Verifies that a player with special characters in name is stored correctly.
+    test('Player with special characters in name is stored correctly', () async {
+      final specialPlayer = Player(name: 'Test!@#\$%^&*()_+-=[]{}|;\':",.<>?/`~');
+
+      await database.playerDao.addPlayer(player: specialPlayer);
+
+      final fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: specialPlayer.id,
+      );
+      expect(fetchedPlayer.name, specialPlayer.name);
+    });
+
+    // Verifies that a player with description is stored correctly.
+    test('Player with description is stored correctly', () async {
+      final playerWithDescription = Player(
+        name: 'Described Player',
+        description: 'This is a test description',
+      );
+
+      await database.playerDao.addPlayer(player: playerWithDescription);
+
+      final fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: playerWithDescription.id,
+      );
+      expect(fetchedPlayer.name, playerWithDescription.name);
+      expect(fetchedPlayer.description, playerWithDescription.description);
+    });
+
+    // Verifies that a player with null description is stored correctly.
+    test('Player with null description is stored correctly', () async {
+      final playerWithoutDescription = Player(name: 'No Description Player');
+
+      await database.playerDao.addPlayer(player: playerWithoutDescription);
+
+      final fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: playerWithoutDescription.id,
+      );
+      expect(fetchedPlayer.description, isNull);
+    });
+
+    // Verifies that multiple updates to the same player work correctly.
+    test('Multiple updates to the same player work correctly', () async {
+      await database.playerDao.addPlayer(player: testPlayer1);
+
+      await database.playerDao.updatePlayerName(
+        playerId: testPlayer1.id,
+        newName: 'First Update',
+      );
+
+      var fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: testPlayer1.id,
+      );
+      expect(fetchedPlayer.name, 'First Update');
+
+      await database.playerDao.updatePlayerName(
+        playerId: testPlayer1.id,
+        newName: 'Second Update',
+      );
+
+      fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: testPlayer1.id,
+      );
+      expect(fetchedPlayer.name, 'Second Update');
+
+      await database.playerDao.updatePlayerName(
+        playerId: testPlayer1.id,
+        newName: 'Third Update',
+      );
+
+      fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: testPlayer1.id,
+      );
+      expect(fetchedPlayer.name, 'Third Update');
+    });
+
+    // Verifies that a player with empty string name is stored correctly.
+    test('Player with empty string name is stored correctly', () async {
+      final emptyNamePlayer = Player(name: '');
+
+      await database.playerDao.addPlayer(player: emptyNamePlayer);
+
+      final fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: emptyNamePlayer.id,
+      );
+      expect(fetchedPlayer.name, '');
+    });
+
+    // Verifies that a player with very long name is stored correctly.
+    test('Player with very long name is stored correctly', () async {
+      final longName = 'A' * 1000;
+      final longNamePlayer = Player(name: longName);
+
+      await database.playerDao.addPlayer(player: longNamePlayer);
+
+      final fetchedPlayer = await database.playerDao.getPlayerById(
+        playerId: longNamePlayer.id,
+      );
+      expect(fetchedPlayer.name, longName);
+    });
+
+    // Verifies that addPlayer returns true on first add.
+    test('addPlayer returns true when player is added successfully', () async {
+      final result = await database.playerDao.addPlayer(player: testPlayer1);
+      expect(result, true);
+
+      final playerExists = await database.playerDao.playerExists(
+        playerId: testPlayer1.id,
+      );
+      expect(playerExists, true);
+    });
   });
 }

test/db_tests/score_test.dart

@@ -0,0 +1,736 @@
+import 'package:clock/clock.dart';
+import 'package:drift/drift.dart' hide isNull, isNotNull;
+import 'package:drift/native.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
+import 'package:game_tracker/data/dto/match.dart';
+import 'package:game_tracker/data/dto/player.dart';
+
+void main() {
+  late AppDatabase database;
+  late Player testPlayer1;
+  late Player testPlayer2;
+  late Player testPlayer3;
+  late Game testGame;
+  late Match testMatch1;
+  late Match testMatch2;
+  final fixedDate = DateTime(2025, 11, 19, 00, 11, 23);
+  final fakeClock = Clock(() => fixedDate);
+
+  setUp(() async {
+    database = AppDatabase(
+      DatabaseConnection(
+        NativeDatabase.memory(),
+        // Recommended for widget tests to avoid test errors.
+        closeStreamsSynchronously: true,
+      ),
+    );
+
+    withClock(fakeClock, () {
+      testPlayer1 = Player(name: 'Alice');
+      testPlayer2 = Player(name: 'Bob');
+      testPlayer3 = Player(name: 'Charlie');
+      testGame = Game(name: 'Test Game');
+      testMatch1 = Match(
+        name: 'Test Match 1',
+        game: testGame,
+        players: [testPlayer1, testPlayer2],
+      );
+      testMatch2 = Match(
+        name: 'Test Match 2',
+        game: testGame,
+        players: [testPlayer2, testPlayer3],
+      );
+    });
+
+    await database.playerDao.addPlayersAsList(
+      players: [testPlayer1, testPlayer2, testPlayer3],
+    );
+    await database.gameDao.addGame(game: testGame);
+    await database.matchDao.addMatch(match: testMatch1);
+    await database.matchDao.addMatch(match: testMatch2);
+  });
+
+  tearDown(() async {
+    await database.close();
+  });
+
+  group('Score Tests', () {
+
+    // Verifies that a score can be added and retrieved with all fields intact.
+    test('Adding and fetching a score works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(score, isNotNull);
+      expect(score!.playerId, testPlayer1.id);
+      expect(score.matchId, testMatch1.id);
+      expect(score.roundNumber, 1);
+      expect(score.score, 10);
+      expect(score.change, 10);
+    });
+
+    // Verifies that getScoresForMatch returns all scores for a given match.
+    test('Getting scores for a match works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 20,
+        change: 20,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 2,
+        score: 25,
+        change: 15,
+      );
+
+      final scores = await database.scoreDao.getScoresForMatch(
+        matchId: testMatch1.id,
+      );
+
+      expect(scores.length, 3);
+    });
+
+    // Verifies that getPlayerScoresInMatch returns all scores for a player in a match, ordered by round.
+    test('Getting player scores in a match works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 2,
+        score: 25,
+        change: 15,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 3,
+        score: 30,
+        change: 5,
+      );
+
+      final playerScores = await database.scoreDao.getPlayerScoresInMatch(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+
+      expect(playerScores.length, 3);
+      expect(playerScores[0].roundNumber, 1);
+      expect(playerScores[1].roundNumber, 2);
+      expect(playerScores[2].roundNumber, 3);
+      expect(playerScores[0].score, 10);
+      expect(playerScores[1].score, 25);
+      expect(playerScores[2].score, 30);
+    });
+
+    // Verifies that getScoreForRound returns null for a non-existent round number.
+    test('Getting score for a non-existent round returns null', () async {
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 999,
+      );
+
+      expect(score, isNull);
+    });
+
+    // Verifies that updateScore correctly updates the score and change values.
+    test('Updating a score works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+
+      final updated = await database.scoreDao.updateScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        newScore: 50,
+        newChange: 40,
+      );
+
+      expect(updated, true);
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(score, isNotNull);
+      expect(score!.score, 50);
+      expect(score.change, 40);
+    });
+
+    // Verifies that updateScore returns false for a non-existent score entry.
+    test('Updating a non-existent score returns false', () async {
+      final updated = await database.scoreDao.updateScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 999,
+        newScore: 50,
+        newChange: 40,
+      );
+
+      expect(updated, false);
+    });
+
+    // Verifies that deleteScore removes the score entry and returns true.
+    test('Deleting a score works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+
+      final deleted = await database.scoreDao.deleteScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(deleted, true);
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(score, isNull);
+    });
+
+    // Verifies that deleteScore returns false for a non-existent score entry.
+    test('Deleting a non-existent score returns false', () async {
+      final deleted = await database.scoreDao.deleteScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 999,
+      );
+
+      expect(deleted, false);
+    });
+
+    // Verifies that deleteScoresForMatch removes all scores for a match but keeps other match scores.
+    test('Deleting scores for a match works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 20,
+        change: 20,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch2.id,
+        roundNumber: 1,
+        score: 15,
+        change: 15,
+      );
+
+      final deleted = await database.scoreDao.deleteScoresForMatch(
+        matchId: testMatch1.id,
+      );
+
+      expect(deleted, true);
+
+      final match1Scores = await database.scoreDao.getScoresForMatch(
+        matchId: testMatch1.id,
+      );
+      expect(match1Scores.length, 0);
+
+      final match2Scores = await database.scoreDao.getScoresForMatch(
+        matchId: testMatch2.id,
+      );
+      expect(match2Scores.length, 1);
+    });
+
+    // Verifies that deleteScoresForPlayer removes all scores for a player across all matches.
+    test('Deleting scores for a player works correctly', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch2.id,
+        roundNumber: 1,
+        score: 15,
+        change: 15,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 20,
+        change: 20,
+      );
+
+      final deleted = await database.scoreDao.deleteScoresForPlayer(
+        playerId: testPlayer1.id,
+      );
+
+      expect(deleted, true);
+
+      final player1Scores = await database.scoreDao.getPlayerScoresInMatch(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+      expect(player1Scores.length, 0);
+
+      final player2Scores = await database.scoreDao.getPlayerScoresInMatch(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+      );
+      expect(player2Scores.length, 1);
+    });
+
+    // Verifies that getLatestRoundNumber returns the highest round number for a match.
+    test('Getting latest round number works correctly', () async {
+      var latestRound = await database.scoreDao.getLatestRoundNumber(
+        matchId: testMatch1.id,
+      );
+      expect(latestRound, 0);
+
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+
+      latestRound = await database.scoreDao.getLatestRoundNumber(
+        matchId: testMatch1.id,
+      );
+      expect(latestRound, 1);
+
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 5,
+        score: 50,
+        change: 40,
+      );
+
+      latestRound = await database.scoreDao.getLatestRoundNumber(
+        matchId: testMatch1.id,
+      );
+      expect(latestRound, 5);
+    });
+
+    // Verifies that getTotalScoreForPlayer returns the latest score (cumulative) for a player.
+    test('Getting total score for a player works correctly', () async {
+      var totalScore = await database.scoreDao.getTotalScoreForPlayer(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+      expect(totalScore, 0);
+
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 2,
+        score: 25,
+        change: 15,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 3,
+        score: 40,
+        change: 15,
+      );
+
+      totalScore = await database.scoreDao.getTotalScoreForPlayer(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+      expect(totalScore, 40);
+    });
+
+    // Verifies that adding a score with the same player/match/round replaces the existing one.
+    test('Adding the same score twice replaces the existing one', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 99,
+        change: 99,
+      );
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(score, isNotNull);
+      expect(score!.score, 99);
+      expect(score.change, 99);
+    });
+
+    // Verifies that getScoresForMatch returns empty list for match with no scores.
+    test('Getting scores for match with no scores returns empty list', () async {
+      final scores = await database.scoreDao.getScoresForMatch(
+        matchId: testMatch1.id,
+      );
+
+      expect(scores.isEmpty, true);
+    });
+
+    // Verifies that getPlayerScoresInMatch returns empty list when player has no scores.
+    test('Getting player scores with no scores returns empty list', () async {
+      final playerScores = await database.scoreDao.getPlayerScoresInMatch(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+
+      expect(playerScores.isEmpty, true);
+    });
+
+    // Verifies that scores can have negative values.
+    test('Score can have negative values', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: -10,
+        change: -10,
+      );
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(score, isNotNull);
+      expect(score!.score, -10);
+      expect(score.change, -10);
+    });
+
+    // Verifies that scores can have zero values.
+    test('Score can have zero values', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 0,
+        change: 0,
+      );
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(score, isNotNull);
+      expect(score!.score, 0);
+      expect(score.change, 0);
+    });
+
+    // Verifies that very large round numbers are supported.
+    test('Score supports very large round numbers', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 999999,
+        score: 100,
+        change: 100,
+      );
+
+      final score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 999999,
+      );
+
+      expect(score, isNotNull);
+      expect(score!.roundNumber, 999999);
+    });
+
+    // Verifies that getLatestRoundNumber returns max correctly for non-consecutive rounds.
+    test('Getting latest round number with non-consecutive rounds', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 5,
+        score: 50,
+        change: 40,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 3,
+        score: 30,
+        change: 20,
+      );
+
+      final latestRound = await database.scoreDao.getLatestRoundNumber(
+        matchId: testMatch1.id,
+      );
+
+      expect(latestRound, 5);
+    });
+
+    // Verifies that deleteScoresForMatch returns false when no scores exist.
+    test('Deleting scores for empty match returns false', () async {
+      final deleted = await database.scoreDao.deleteScoresForMatch(
+        matchId: testMatch1.id,
+      );
+
+      expect(deleted, false);
+    });
+
+    // Verifies that deleteScoresForPlayer returns false when player has no scores.
+    test('Deleting scores for player with no scores returns false', () async {
+      final deleted = await database.scoreDao.deleteScoresForPlayer(
+        playerId: testPlayer1.id,
+      );
+
+      expect(deleted, false);
+    });
+
+    // Verifies that multiple players in same match can have independent score updates.
+    test('Multiple players in same match have independent scores', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 20,
+        change: 20,
+      );
+
+      await database.scoreDao.updateScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        newScore: 100,
+        newChange: 90,
+      );
+
+      final player1Score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+      final player2Score = await database.scoreDao.getScoreForRound(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+      );
+
+      expect(player1Score!.score, 100);
+      expect(player2Score!.score, 20);
+    });
+
+    // Verifies that scores are isolated across different matches.
+    test('Scores are isolated across different matches', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch2.id,
+        roundNumber: 1,
+        score: 50,
+        change: 50,
+      );
+
+      final match1Scores = await database.scoreDao.getPlayerScoresInMatch(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+      final match2Scores = await database.scoreDao.getPlayerScoresInMatch(
+        playerId: testPlayer1.id,
+        matchId: testMatch2.id,
+      );
+
+      expect(match1Scores.length, 1);
+      expect(match2Scores.length, 1);
+      expect(match1Scores[0].score, 10);
+      expect(match2Scores[0].score, 50);
+    });
+
+    // Verifies that getTotalScoreForPlayer returns latest score across multiple rounds.
+    test('Total score for player returns latest cumulative score', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 2,
+        score: 25,
+        change: 25,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 3,
+        score: 50,
+        change: 25,
+      );
+
+      final totalScore = await database.scoreDao.getTotalScoreForPlayer(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+      );
+
+      // Should return the highest round's score
+      expect(totalScore, 50);
+    });
+
+    // Verifies that updating one player's score doesn't affect another player's score in same round.
+    test('Updating one player score does not affect other players in same round', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 20,
+        change: 20,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer3.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 30,
+        change: 30,
+      );
+
+      await database.scoreDao.updateScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        newScore: 99,
+        newChange: 89,
+      );
+
+      final scores = await database.scoreDao.getScoresForMatch(
+        matchId: testMatch1.id,
+      );
+
+      expect(scores.length, 3);
+      expect(scores.where((s) => s.playerId == testPlayer1.id).first.score, 10);
+      expect(scores.where((s) => s.playerId == testPlayer2.id).first.score, 99);
+      expect(scores.where((s) => s.playerId == testPlayer3.id).first.score, 30);
+    });
+
+    // Verifies that deleting a player's scores only affects that specific player.
+    test('Deleting player scores only affects target player', () async {
+      await database.scoreDao.addScore(
+        playerId: testPlayer1.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 10,
+        change: 10,
+      );
+      await database.scoreDao.addScore(
+        playerId: testPlayer2.id,
+        matchId: testMatch1.id,
+        roundNumber: 1,
+        score: 20,
+        change: 20,
+      );
+
+      await database.scoreDao.deleteScoresForPlayer(
+        playerId: testPlayer1.id,
+      );
+
+      final match1Scores = await database.scoreDao.getScoresForMatch(
+        matchId: testMatch1.id,
+      );
+
+      expect(match1Scores.length, 1);
+      expect(match1Scores[0].playerId, testPlayer2.id);
+    });
+  });
+}

test/db_tests/team_test.dart

@@ -0,0 +1,526 @@
+import 'package:clock/clock.dart';
+import 'package:drift/drift.dart';
+import 'package:drift/native.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
+import 'package:game_tracker/data/dto/match.dart';
+import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/data/dto/team.dart';
+
+void main() {
+  late AppDatabase database;
+  late Player testPlayer1;
+  late Player testPlayer2;
+  late Player testPlayer3;
+  late Player testPlayer4;
+  late Team testTeam1;
+  late Team testTeam2;
+  late Team testTeam3;
+  late Game testGame1;
+  late Game testGame2;
+  final fixedDate = DateTime(2025, 11, 19, 00, 11, 23);
+  final fakeClock = Clock(() => fixedDate);
+
+  setUp(() async {
+    database = AppDatabase(
+      DatabaseConnection(
+        NativeDatabase.memory(),
+        // Recommended for widget tests to avoid test errors.
+        closeStreamsSynchronously: true,
+      ),
+    );
+
+    withClock(fakeClock, () {
+      testPlayer1 = Player(name: 'Alice');
+      testPlayer2 = Player(name: 'Bob');
+      testPlayer3 = Player(name: 'Charlie');
+      testPlayer4 = Player(name: 'Diana');
+      testTeam1 = Team(
+        name: 'Team Alpha',
+        members: [testPlayer1, testPlayer2],
+      );
+      testTeam2 = Team(
+        name: 'Team Beta',
+        members: [testPlayer3, testPlayer4],
+      );
+      testTeam3 = Team(
+        name: 'Team Gamma',
+        members: [testPlayer1, testPlayer3],
+      );
+      testGame1 = Game(name: 'Game 1');
+      testGame2 = Game(name: 'Game 2');
+    });
+
+    await database.playerDao.addPlayersAsList(
+      players: [testPlayer1, testPlayer2, testPlayer3, testPlayer4],
+    );
+    await database.gameDao.addGame(game: testGame1);
+    await database.gameDao.addGame(game: testGame2);
+  });
+
+  tearDown(() async {
+    await database.close();
+  });
+
+  group('Team Tests', () {
+
+    // Verifies that a single team can be added and retrieved with all fields intact.
+    test('Adding and fetching a single team works correctly', () async {
+      final added = await database.teamDao.addTeam(team: testTeam1);
+      expect(added, true);
+
+      final fetchedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+
+      expect(fetchedTeam.id, testTeam1.id);
+      expect(fetchedTeam.name, testTeam1.name);
+      expect(fetchedTeam.createdAt, testTeam1.createdAt);
+    });
+
+    // Verifies that multiple teams can be added at once and retrieved correctly.
+    test('Adding and fetching multiple teams works correctly', () async {
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam2, testTeam3],
+      );
+
+      final allTeams = await database.teamDao.getAllTeams();
+      expect(allTeams.length, 3);
+
+      final testTeams = {
+        testTeam1.id: testTeam1,
+        testTeam2.id: testTeam2,
+        testTeam3.id: testTeam3,
+      };
+
+      for (final team in allTeams) {
+        final testTeam = testTeams[team.id]!;
+
+        expect(team.id, testTeam.id);
+        expect(team.name, testTeam.name);
+        expect(team.createdAt, testTeam.createdAt);
+      }
+    });
+
+    // Verifies that adding the same team twice does not create duplicates and returns false.
+    test('Adding the same team twice does not create duplicates', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+      final addedAgain = await database.teamDao.addTeam(team: testTeam1);
+
+      expect(addedAgain, false);
+
+      final teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 1);
+    });
+
+    // Verifies that teamExists returns correct boolean based on team presence.
+    test('Team existence check works correctly', () async {
+      var teamExists = await database.teamDao.teamExists(teamId: testTeam1.id);
+      expect(teamExists, false);
+
+      await database.teamDao.addTeam(team: testTeam1);
+
+      teamExists = await database.teamDao.teamExists(teamId: testTeam1.id);
+      expect(teamExists, true);
+    });
+
+    // Verifies that deleteTeam removes the team and returns true.
+    test('Deleting a team works correctly', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      final teamDeleted = await database.teamDao.deleteTeam(
+        teamId: testTeam1.id,
+      );
+      expect(teamDeleted, true);
+
+      final teamExists = await database.teamDao.teamExists(
+        teamId: testTeam1.id,
+      );
+      expect(teamExists, false);
+    });
+
+    // Verifies that deleteTeam returns false for a non-existent team ID.
+    test('Deleting a non-existent team returns false', () async {
+      final teamDeleted = await database.teamDao.deleteTeam(
+        teamId: 'non-existent-id',
+      );
+      expect(teamDeleted, false);
+    });
+
+    // Verifies that getTeamCount returns correct count through add/delete operations.
+    test('Getting the team count works correctly', () async {
+      var teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 0);
+
+      await database.teamDao.addTeam(team: testTeam1);
+
+      teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 1);
+
+      await database.teamDao.addTeam(team: testTeam2);
+
+      teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 2);
+
+      await database.teamDao.deleteTeam(teamId: testTeam1.id);
+
+      teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 1);
+
+      await database.teamDao.deleteTeam(teamId: testTeam2.id);
+
+      teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 0);
+    });
+
+    // Verifies that updateTeamName correctly updates only the name field.
+    test('Updating team name works correctly', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      var fetchedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+      expect(fetchedTeam.name, testTeam1.name);
+
+      const newName = 'Updated Team Name';
+      await database.teamDao.updateTeamName(
+        teamId: testTeam1.id,
+        newName: newName,
+      );
+
+      fetchedTeam = await database.teamDao.getTeamById(teamId: testTeam1.id);
+      expect(fetchedTeam.name, newName);
+    });
+
+    // Verifies that deleteAllTeams removes all teams from the database.
+    test('Deleting all teams works correctly', () async {
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam2, testTeam3],
+      );
+
+      var teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 3);
+
+      final deleted = await database.teamDao.deleteAllTeams();
+      expect(deleted, true);
+
+      teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 0);
+    });
+
+    // Verifies that deleteAllTeams returns false when no teams exist.
+    test('Deleting all teams when empty returns false', () async {
+      final deleted = await database.teamDao.deleteAllTeams();
+      expect(deleted, false);
+    });
+
+    // Verifies that addTeamsAsList returns false when given an empty list.
+    test('Adding teams as list with empty list returns false', () async {
+      final added = await database.teamDao.addTeamsAsList(teams: []);
+      expect(added, false);
+    });
+
+    // Verifies that addTeamsAsList with duplicate IDs ignores duplicates and keeps the first.
+    test('Adding teams with duplicate IDs ignores duplicates', () async {
+      final duplicateTeam = Team(
+        id: testTeam1.id,
+        name: 'Duplicate Team',
+        members: [testPlayer4],
+      );
+
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, duplicateTeam, testTeam2],
+      );
+
+      final teamCount = await database.teamDao.getTeamCount();
+      expect(teamCount, 2);
+
+      // The first one should be kept (insertOrIgnore)
+      final fetchedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+      expect(fetchedTeam.name, testTeam1.name);
+    });
+
+    // Verifies that getAllTeams returns empty list when no teams exist.
+    test('Getting all teams when empty returns empty list', () async {
+      final allTeams = await database.teamDao.getAllTeams();
+      expect(allTeams.isEmpty, true);
+    });
+
+    // Verifies that getTeamById throws exception for non-existent team.
+    test('Getting non-existent team throws exception', () async {
+      expect(
+        () => database.teamDao.getTeamById(teamId: 'non-existent-id'),
+        throwsA(isA<StateError>()),
+      );
+    });
+
+    // Verifies that updating team name preserves other fields.
+    test('Updating team name preserves other team fields', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+      final originalTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+      final originalCreatedAt = originalTeam.createdAt;
+
+      const newName = 'Brand New Team Name';
+      await database.teamDao.updateTeamName(
+        teamId: testTeam1.id,
+        newName: newName,
+      );
+
+      final updatedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+
+      expect(updatedTeam.name, newName);
+      expect(updatedTeam.id, testTeam1.id);
+      expect(updatedTeam.createdAt, originalCreatedAt);
+    });
+
+    // Verifies that team name can be updated to an empty string.
+    test('Updating team name to empty string works', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      await database.teamDao.updateTeamName(
+        teamId: testTeam1.id,
+        newName: '',
+      );
+
+      final updatedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+
+      expect(updatedTeam.name, '');
+    });
+
+    // Verifies that team name can be updated to a very long string.
+    test('Updating team name to long string works', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+      final longName = 'A' * 500; // 500 character name
+
+      await database.teamDao.updateTeamName(
+        teamId: testTeam1.id,
+        newName: longName,
+      );
+
+      final updatedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+
+      expect(updatedTeam.name, longName);
+      expect(updatedTeam.name.length, 500);
+    });
+
+    // Verifies that updating non-existent team name doesn't throw error.
+    test('Updating non-existent team name completes without error', () async {
+      expect(
+        () => database.teamDao.updateTeamName(
+          teamId: 'non-existent-id',
+          newName: 'New Name',
+        ),
+        returnsNormally,
+      );
+    });
+
+    // Verifies that deleteTeam only affects the specified team.
+    test('Deleting one team does not affect other teams', () async {
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam2, testTeam3],
+      );
+
+      await database.teamDao.deleteTeam(teamId: testTeam2.id);
+
+      final allTeams = await database.teamDao.getAllTeams();
+      expect(allTeams.length, 2);
+      expect(allTeams.any((t) => t.id == testTeam1.id), true);
+      expect(allTeams.any((t) => t.id == testTeam2.id), false);
+      expect(allTeams.any((t) => t.id == testTeam3.id), true);
+    });
+
+    // Verifies that teams with overlapping members are independent.
+    test('Teams with overlapping members are independent', () async {
+      // Create two matches since player_match has primary key {playerId, matchId}
+      final match1 = Match(name: 'Match 1', game: testGame1);
+      final match2 = Match(name: 'Match 2', game: testGame2);
+      await database.matchDao.addMatch(match: match1);
+      await database.matchDao.addMatch(match: match2);
+
+      // Add teams to database
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam3],
+      );
+
+      // Associate players with teams through match1
+      // testTeam1: player1, player2
+      await database.playerMatchDao.addPlayerToMatch(
+        playerId: testPlayer1.id,
+        matchId: match1.id,
+        teamId: testTeam1.id,
+        score: 0,
+      );
+      await database.playerMatchDao.addPlayerToMatch(
+        playerId: testPlayer2.id,
+        matchId: match1.id,
+        teamId: testTeam1.id,
+        score: 0,
+      );
+
+      // Associate players with teams through match2
+      // testTeam3: player1, player3 (overlapping player1)
+      await database.playerMatchDao.addPlayerToMatch(
+        playerId: testPlayer1.id,
+        matchId: match2.id,
+        teamId: testTeam3.id,
+        score: 0,
+      );
+      await database.playerMatchDao.addPlayerToMatch(
+        playerId: testPlayer3.id,
+        matchId: match2.id,
+        teamId: testTeam3.id,
+        score: 0,
+      );
+
+      final team1 = await database.teamDao.getTeamById(teamId: testTeam1.id);
+      final team3 = await database.teamDao.getTeamById(teamId: testTeam3.id);
+
+      expect(team1.members.length, 2);
+      expect(team3.members.length, 2);
+      expect(team1.members.any((p) => p.id == testPlayer1.id), true);
+      expect(team3.members.any((p) => p.id == testPlayer1.id), true);
+    });
+
+    // Verifies that adding teams sequentially works correctly.
+    test('Adding teams sequentially maintains correct count', () async {
+      var count = await database.teamDao.getTeamCount();
+      expect(count, 0);
+
+      await database.teamDao.addTeam(team: testTeam1);
+      count = await database.teamDao.getTeamCount();
+      expect(count, 1);
+
+      await database.teamDao.addTeam(team: testTeam2);
+      count = await database.teamDao.getTeamCount();
+      expect(count, 2);
+
+      await database.teamDao.addTeam(team: testTeam3);
+      count = await database.teamDao.getTeamCount();
+      expect(count, 3);
+    });
+
+    // Verifies that getAllTeams returns all teams with correct data.
+    test('Getting all teams returns all teams with correct data', () async {
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam2, testTeam3],
+      );
+
+      final allTeams = await database.teamDao.getAllTeams();
+
+      expect(allTeams.length, 3);
+      expect(
+        allTeams.map((t) => t.id).toSet(),
+        {testTeam1.id, testTeam2.id, testTeam3.id},
+      );
+    });
+
+    // Verifies that teamExists returns false for deleted teams.
+    test('Team existence returns false after deletion', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+      expect(await database.teamDao.teamExists(teamId: testTeam1.id), true);
+
+      await database.teamDao.deleteTeam(teamId: testTeam1.id);
+      expect(await database.teamDao.teamExists(teamId: testTeam1.id), false);
+    });
+
+    // Verifies that adding multiple teams in batch then deleting returns correct count.
+    test('Batch add then partial delete maintains correct count', () async {
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam2, testTeam3],
+      );
+
+      expect(await database.teamDao.getTeamCount(), 3);
+
+      await database.teamDao.deleteTeam(teamId: testTeam1.id);
+      expect(await database.teamDao.getTeamCount(), 2);
+
+      await database.teamDao.deleteTeam(teamId: testTeam3.id);
+      expect(await database.teamDao.getTeamCount(), 1);
+    });
+
+    // Verifies that deleteAllTeams with single team works.
+    test('Deleting all teams with single team returns true', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+      expect(await database.teamDao.getTeamCount(), 1);
+
+      final deleted = await database.teamDao.deleteAllTeams();
+      expect(deleted, true);
+      expect(await database.teamDao.getTeamCount(), 0);
+    });
+
+    // Verifies that addTeam after deleteAllTeams works correctly.
+    test('Adding team after deleteAllTeams works correctly', () async {
+      await database.teamDao.addTeamsAsList(
+        teams: [testTeam1, testTeam2],
+      );
+      expect(await database.teamDao.getTeamCount(), 2);
+
+      await database.teamDao.deleteAllTeams();
+      expect(await database.teamDao.getTeamCount(), 0);
+
+      final added = await database.teamDao.addTeam(team: testTeam3);
+      expect(added, true);
+      expect(await database.teamDao.getTeamCount(), 1);
+
+      final fetchedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam3.id,
+      );
+      expect(fetchedTeam.name, testTeam3.name);
+    });
+
+    // Verifies that addTeamsAsList with partial duplicates ignores duplicates.
+    test('Adding teams with some duplicates ignores only duplicates', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      final duplicateTeam1 = Team(
+        id: testTeam1.id,
+        name: 'Different Name',
+        members: [testPlayer3],
+      );
+
+      await database.teamDao.addTeamsAsList(
+        teams: [duplicateTeam1, testTeam2, testTeam3],
+      );
+
+      final allTeams = await database.teamDao.getAllTeams();
+      expect(allTeams.length, 3);
+
+      // Verify testTeam1 retained original name (was inserted first)
+      final team1 = await database.teamDao.getTeamById(teamId: testTeam1.id);
+      expect(team1.name, testTeam1.name);
+    });
+
+    // Verifies that team IDs are preserved correctly.
+    test('Team IDs are preserved through add and retrieve', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      final fetchedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+
+      expect(fetchedTeam.id, testTeam1.id);
+    });
+
+    // Verifies that createdAt timestamps are preserved.
+    test('Team createdAt timestamps are preserved', () async {
+      await database.teamDao.addTeam(team: testTeam1);
+
+      final fetchedTeam = await database.teamDao.getTeamById(
+        teamId: testTeam1.id,
+      );
+
+      expect(fetchedTeam.createdAt, testTeam1.createdAt);
+    });
+  });
+}