schema.sql

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-- SCHEMA: olympics
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DROP SCHEMA IF EXISTS olympics CASCADE;
CREATE SCHEMA olympics;
SET SCHEMA olympics;

DROP TABLE IF EXISTS OLYMPIAD CASCADE;
DROP TABLE IF EXISTS COUNTRY CASCADE;
DROP TABLE IF EXISTS SPORT CASCADE;
DROP TABLE IF EXISTS PARTICIPANT CASCADE;
DROP TABLE IF EXISTS ACCOUNT CASCADE;
DROP TABLE IF EXISTS TEAM_MEMBERS CASCADE;
DROP TABLE IF EXISTS TEAM CASCADE;
DROP TABLE IF EXISTS EVENTS CASCADE;
DROP TABLE IF EXISTS VENUE CASCADE;
DROP TABLE IF EXISTS MEDAL CASCADE;
DROP TABLE IF EXISTS PLACEMENT CASCADE;


/* 
TABLE: OLYMPIAD
Format: (olympiad_num, city, country, opening_date, closing_date, website)
*/
CREATE TABLE OLYMPIAD (
    olympiad_num VARCHAR(30) PRIMARY KEY,
    city VARCHAR(30) NOT NULL,
    country CHAR(3) NOT NULL FOREIGN KEY, --country code for reference to country table
    opening_date TIMESTAMP NOT NULL, 
    closing_date TIMESTAMP NOT NULL,
    website VARCHAR(30) NOT NULL,
    CONSTRAINT olympiad_pk PRIMARY KEY (olympiad_num), --checks that the olympiad number is unique and not null
    CONSTRAINT olympiad_country_fk FOREIGN KEY (country) REFERENCES COUNTRY(country_code) --checks that the country code is a valid country code
    CONSTRAINT olympiad_opening_date_chk CHECK ((opening_date <= closing_date) OR (closing_date IS NULL)) --checks that the opening date is before the closing date
);

/*
TABLE: COUNTRY
Format: (country_code, country_name)
*/
CREATE TABLE COUNTRY (
    country_code CHAR(3) PRIMARY KEY,
    country_name VARCHAR(30) NOT NULL,
    CONSTRAINT country_pk PRIMARY KEY (country_code) --checks that the country code is unique and not null
);

/*
TABLE: SPORT
Format: (sport_id, sport_name, description, team_size, date_added)
*/
CREATE TABLE SPORT (
    sport_id SERIAL PRIMARY KEY,
    sport_name VARCHAR(30) NOT NULL,
    description VARCHAR(3kl0),
    team_size INT NOT NULL,
    date_added TIMESTAMP NOT NULL,
    CONSTRAINT sport_pk PRIMARY KEY (sport_id) --checks that the sport id is unique and not null
    CONSTRAINT sport_team_size_chk CHECK ((team_size > 0) OR (team_size > 100)) --checks that the team size is greater than 0 and less than ... idk maybe 100?
);

/*
TABLE: PARTICIPANT
Format: (participant_id, acount, first, middle, last, birth_country, dob, gender)
*/

/* 
TABLE: ACCOUNT
Format: (account_id, username, passkey, role, last_login)
*/

/*
TABLE: TEAM_MEMBERS
Format: (team, participant)
*/

/*
TABLE: TEAM
Format: (team_id, olympiad, sport, coach, country, gender, eligible)
*/

/*
TABLE: EVENTS
Format: (event_id, venue, olympiad, sport, gender, date)
*/

/*
TABLE: VENUE
Format: (venue_name, capacity)
*/

/*
TABLE: MEDAL
Format: (medal_id, type, points)
*/

/*
TABLE: PLACEMENT
Format: (event, team, medal, position)
*/