- FOREIGN KEY ( tournament, level, parallel ) REFERENCES rounds ( tournament, level, parallel ),
- PRIMARY KEY ( tournament, level, parallel, player )
+ UNIQUE (tournament, round, player),
+ FOREIGN KEY (tournament, round, parallel) REFERENCES groups (tournament, round, parallel),
+ PRIMARY KEY (tournament, round, parallel, player)
+);
+
+CREATE TABLE scores (
+ tournament INTEGER NOT NULL,
+ round INTEGER NOT NULL,
+ parallel INTEGER NOT NULL,
+ player INTEGER NOT NULL REFERENCES players,
+
+ song INTEGER NOT NULL REFERENCES songs,
+ playmode VARCHAR CHECK (playmode IS NULL OR playmode IN ('single','double')),
+ difficulty VARCHAR CHECK (difficulty IS NULL OR difficulty IN ('beginner','standard','difficult','expert','challenge')),
+
+ chosen BOOLEAN NOT NULL,
+ score INTEGER NOT NULL CHECK (score >= 0 AND score <= 10000),
+
+ FOREIGN KEY (song) REFERENCES songs (song),
+ FOREIGN KEY (song, playmode, difficulty) REFERENCES songratings (song, playmode, difficulty),
+ FOREIGN KEY (tournament, round, parallel, player) REFERENCES roundparticipation (tournament, round, parallel, player),
+ PRIMARY KEY (tournament, round, parallel, player, song)