99 lines
2.1 KiB
SQL
99 lines
2.1 KiB
SQL
create table games(
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id bigserial PRIMARY KEY,
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name_ru text,
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name_eng text,
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issue_date date,
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age_min int,
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age_max int,
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players_min int,
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players_max int,
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game_time_min interval,
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game_time_max interval,
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edition int
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);
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create table countries(
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id bigserial PRIMARY KEY,
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name text
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);
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create table genres(
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id bigserial PRIMARY KEY,
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name text
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);
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create table themes(
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id bigserial PRIMARY KEY,
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name text
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);
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create table authors(
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id bigserial PRIMARY KEY,
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first_name text,
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last_name text,
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id_country bigint REFERENCES countries (id)
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);
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create table owners(
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id bigserial PRIMARY KEY,
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first_name text,
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last_name text
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);
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create table rating_types(
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id bigserial PRIMARY KEY,
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name text,
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scale text
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);
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create table game_collection(
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id_owner bigint REFERENCES owners (id),
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id_game bigint REFERENCES games (id),
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PRIMARY KEY(id_owner, id_game)
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);
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create table game_authors(
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id_author bigint REFERENCES authors (id),
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id_game bigint REFERENCES games (id),
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PRIMARY KEY(id_author, id_game)
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);
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create table game_genres(
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id_game bigint REFERENCES games (id),
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id_genre bigint REFERENCES genres (id),
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PRIMARY KEY(id_genre, id_game)
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);
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create table game_themes(
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id_game bigint REFERENCES games (id),
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id_theme bigint REFERENCES themes (id),
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PRIMARY KEY(id_theme, id_game)
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);
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create table game_ratings(
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id_game bigint REFERENCES games (id),
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id_rating_type bigint REFERENCES rating_types (id),
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rating numeric,
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PRIMARY KEY(id_rating_type, id_game)
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);
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ALTER TABLE games
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ADD CHECK (name_ru is not null or name_eng is not null);
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ALTER TABLE games
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ADD CHECK (age_min >= 0 and age_min <= 99);
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ALTER TABLE games
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ADD CHECK (age_max >= 0 and age_max <= 99);
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ALTER TABLE games
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ADD CHECK (players_min > 0 and players_min < 99);
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ALTER TABLE games
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ADD CHECK (players_max > 0 and players_max < 99);
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ALTER TABLE games
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ADD CHECK (game_time_min > 0 and game_time_min < 1440);
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ALTER TABLE games
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ADD CHECK (game_time_max > 0 and game_time_max < 1440); |