83 lines
3.1 KiB
SQL
83 lines
3.1 KiB
SQL
CREATE TABLE teams (
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team_name VARCHAR(255) NOT NULL, -- assuming team name is unique
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home_venue VARCHAR(255) NOT NULL, -- assuming that two teams could share a home venue (e.g, A teams and B teams)
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manager VARCHAR(255), -- assuming no other information is known/required for managers other than name
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PRIMARY KEY (team_name)
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);
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CREATE TABLE players (
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player_id INT NOT NULL AUTO_INCREMENT,
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team_name VARCHAR(255) NOT NULL,
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squad_number INT NOT NULL, -- assuming squad number is unique within squads
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player_name VARCHAR(255) NOT NULL,
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PRIMARY KEY (player_id),
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FOREIGN KEY (team_name) REFERENCES teams(team_name)
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);
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CREATE TABLE games (
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game_id INT NOT NULL AUTO_INCREMENT, -- no other uniquely identifying information about a game (there could be two otherwise identical games)
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home_team VARCHAR(255) NOT NULL, -- venue can be inferred from this
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away_team VARCHAR(255) NOT NULL,
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path_to_heap_file VARCHAR(255),
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PRIMARY KEY (game_id),
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FOREIGN KEY (home_team) REFERENCES teams(team_name),
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FOREIGN KEY (away_team) REFERENCES teams(team_name)
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);
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-- this table should only be inserted into upon the completion of a game
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CREATE TABLE results (
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game_id INT NOT NULL,
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winner VARCHAR(255), -- NULL value indicates a draw
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PRIMARY KEY (game_id),
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FOREIGN KEY (winner) REFERENCES teams(team_name)
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);
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-- data redundancy here: players rarely change during match
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CREATE TABLE active_players (
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active_time TIMESTAMP NOT NULL,
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game_id INT NOT NULL,
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player_id INT NOT NULL,
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PRIMARY KEY (active_time, player_id),
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FOREIGN KEY (game_id) REFERENCES games(game_id),
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FOREIGN KEY (player_id) REFERENCES players(player_id)
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);
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CREATE TABLE substitutions (
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substitution_time TIMESTAMP NOT NULL,
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game_id INT NOT NULL,
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off_player_id INT NOT NULL,
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on_player_id INT NOT NULL,
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PRIMARY KEY (substitution_time, off_player_id), -- assuming two substitutions could be done at the same time
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FOREIGN KEY (game_id) REFERENCES games(game_id),
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FOREIGN KEY (off_player_id) REFERENCES players(player_id),
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FOREIGN KEY (on_player_id) REFERENCES players(player_id)
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);
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CREATE TABLE sendoffs (
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sendoff_time TIMESTAMP NOT NULL,
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game_id INT NOT NULL,
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player_id INT NOT NULL,
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PRIMARY KEY (sendoff_time, player_id), -- assuming two sendoffs could be done at the same time - otherwise could just use time
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FOREIGN KEY (game_id) REFERENCES games(game_id),
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FOREIGN KEY (player_id) REFERENCES players(player_id)
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);
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CREATE TABLE goals (
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goal_time TIMESTAMP NOT NULL, -- assuming two goals can't be scored at the same time
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game_id INT NOT NULL,
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player_id INT NOT NULL, -- cam infer squad number from this
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benefitting_team VARCHAR(255) NOT NULL, -- the team to which the points are awarded for this goal
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PRIMARY KEY (goal_time, game_id),
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FOREIGN KEY (game_id) REFERENCES games(game_id),
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FOREIGN KEY (player_id) REFERENCES players(player_id),
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FOREIGN KEY (benefitting_team) REFERENCES teams(team_name)
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);
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