CREATE TABLE user ( id varchar(32) PRIMARY KEY, mail_address varchar NOT NULL UNIQUE, name varchar(30) NOT NULL, forename varchar(30) NOT NULL, password_hash varchar ); CREATE TABLE team ( id int, name varchar(30), club_name varchar(30), PRIMARY KEY (id) ); CREATE TABLE tactic_group ( tactic_id int, team_id int, PRIMARY KEY (tactic_id, team_id), FOREIGN KEY (tactic_id) REFERENCES tactic (id), FOREIGN KEY (team_id) REFERENCES team (id) ); CREATE TABLE member ( team_id int, user_id int, is_admin boolean NOT NULL, PRIMARY KEY (team_id, user_id), FOREIGN KEY (team_id) REFERENCES team (id), FOREIGN KEY (user_id) REFERENCES user (id) ); CREATE TABLE tactic ( id int PRIMARY KEY, name varchar(30) NOT NULL, owner_id int, file_path varchar NOT NULL, FOREIGN KEY (owner_id) REFERENCES user (id) );