private static final String CREATE_TABLE_WORKOUT_DONE = " CREATE TABLE workout_done(id INTEGER PRIMARY KEY, name TEXT, data DATETIME DEFAULT CURRENT_TIMESTAMP ) ";

    private static final String CREATE_TABLE_ROUTINE_DONE = " CREATE TABLE routine_done (id INTEGER PRIMARY KEY, routine_id_fk INTEGER, workout_id_fk INTEGER," +
            " FOREIGN KEY( routine_id_fk) REFERENCES routine(id), FOREIGN KEY( workout_id_fk) REFERENCES workout_done(id)   ) ";

    private static final String CREATE_TABLE_SERIE= "CREATE TABLE serie(id INTEGER PRIMARY KEY, routine_done_id_fk INTEGER, weight INTEGER, reps INTEGER, FOREIGN KEY( routine_done_id_fk) REFERENCES routine_done(id)) ";