c.EXECUTE("""CREATE TABLE IF NOT EXISTS gk_skills (
                   id integer NOT NULL PRIMARY KEY AUTOINCREMENT,
                   ref integer NOT NULL,
                   pos integer NOT NULL,
                   int integer NOT NULL,
                   blc integer NOT NULL,
                   org integer NOT NULL,
                   goalkeeper_id integer NOT NULL,
                   FOREIGN KEY (goalkeeper_id) REFERENCES goalkeeper (id)
                   )""")

        c.EXECUTE("""CREATE TABLE IF NOT EXISTS train (
                           id integer NOT NULL PRIMARY KEY AUTOINCREMENT,
                           first_skill integer NOT NULL,
                           second_skill integer NOT NULL,
                           gk_skills integer NOT NULL,
                           FOREIGN KEY (gk_skills) REFERENCES gk_skills (id)
                           )""")