84 lines
3.7 KiB
SQL
84 lines
3.7 KiB
SQL
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-- Create table "Genres" to store movie genres
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CREATE TABLE genres (
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genre_id INTEGER PRIMARY KEY AUTOINCREMENT,
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genre_name TEXT NOT NULL UNIQUE CHECK(length(genre_name) > 0), -- Genre name cannot be empty
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CONSTRAINT no_double_spaces_in_genre_name CHECK (genre_name NOT LIKE '% %') -- Genre name cannot contain double spaces
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);
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-- Create table "Movies" to store movie details
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CREATE TABLE movies (
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movie_id INTEGER PRIMARY KEY AUTOINCREMENT,
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title TEXT NOT NULL UNIQUE CHECK(length(title) > 0), -- Movie title cannot be empty
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genre_id INTEGER,
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duration INTEGER CHECK(duration > 0), -- Movie duration must be greater than 0
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FOREIGN KEY (genre_id) REFERENCES genres (genre_id) ON DELETE CASCADE,
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CONSTRAINT no_double_spaces_in_title CHECK (title NOT LIKE '% %') -- Movie title cannot contain double spaces
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);
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-- Create table "Halls" to store cinema hall details
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CREATE TABLE halls (
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hall_id INTEGER PRIMARY KEY AUTOINCREMENT,
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hall_name TEXT NOT NULL UNIQUE CHECK(length(hall_name) > 0), -- Hall name cannot be empty
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capacity INTEGER NOT NULL CHECK(capacity > 0), -- Hall capacity must be positive
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CONSTRAINT no_double_spaces_in_hall_name CHECK (hall_name NOT LIKE '% %') -- Hall name cannot contain double spaces
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);
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-- Create table "Sessions" to store session details
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CREATE TABLE sessions (
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session_id INTEGER PRIMARY KEY AUTOINCREMENT,
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movie_id INTEGER,
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hall_id INTEGER,
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begin_at TIMESTAMP NOT NULL, -- Date and time of the session
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ticket_price REAL NOT NULL CHECK(ticket_price >= 0), -- Ticket price cannot be negative
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FOREIGN KEY (movie_id) REFERENCES movies (movie_id) ON DELETE CASCADE,
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FOREIGN KEY (hall_id) REFERENCES halls (hall_id) ON DELETE CASCADE,
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CONSTRAINT unique_hall_time UNIQUE (hall_id, begin_at) -- Prevent duplicate sessions in the same hall at the same time
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);
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-- Create table "Tickets" to store sold tickets
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CREATE TABLE tickets (
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ticket_id INTEGER PRIMARY KEY AUTOINCREMENT,
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session_id INTEGER,
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seat_number INTEGER NOT NULL CHECK(seat_number > 0), -- Seat number must be positive
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sold_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, -- Sale time defaults to current time
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FOREIGN KEY (session_id) REFERENCES sessions (session_id) ON DELETE CASCADE,
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CONSTRAINT unique_session_seat UNIQUE(session_id, seat_number) -- Unique combination of session and seat number
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);
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-- Create table "Refunds" to store refunded tickets
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CREATE TABLE refunds (
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refund_id INTEGER PRIMARY KEY AUTOINCREMENT,
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ticket_id INTEGER NOT NULL UNIQUE,
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refund_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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refund_amount REAL NOT NULL CHECK (refund_amount >= 0), -- Refund amount cannot be negative
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FOREIGN KEY (ticket_id) REFERENCES tickets(ticket_id) ON DELETE CASCADE
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);
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-- Create table "Roles" to store user roles
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CREATE TABLE roles (
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role_id INTEGER PRIMARY KEY AUTOINCREMENT,
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role_name TEXT UNIQUE NOT NULL CHECK(length(role_name) > 0), -- Role name cannot be empty
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access_level INTEGER UNIQUE NOT NULL CHECK(access_level > 0), -- Access level must be positive
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CONSTRAINT no_spaces_in_role_name CHECK (role_name NOT LIKE '% %') -- Role name cannot contain spaces
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);
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-- Create table "Users" to store user details
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CREATE TABLE users (
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user_id INTEGER PRIMARY KEY AUTOINCREMENT,
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username TEXT UNIQUE NOT NULL CHECK(length(username) > 0), -- Username cannot be empty
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password_hash TEXT NOT NULL CHECK(length(password_hash) > 0), -- Password hash cannot be empty
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salt TEXT UNIQUE NOT NULL CHECK(length(salt) > 0), -- Salt cannot be empty
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role_id INTEGER NOT NULL,
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FOREIGN KEY (role_id) REFERENCES roles(role_id) ON DELETE CASCADE,
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CONSTRAINT no_spaces_in_username CHECK (username NOT LIKE '% %') -- Username cannot contain spaces
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);
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