相关疑难解决方法(0)

我有以下实体配置:

entity AirplaneModelSeat { 
    id Long, 
    seatNo String required 
}
relationship ManyToOne   { 
    AirplaneModelSeat{modelId(model)} to AirplaneModel 
}

此实体配置创建了这样一个表:

+-------------+--------------+------+-----+---------+----------------+
| Field       | Type         | Null | Key | Default | Extra          |
+-------------+--------------+------+-----+---------+----------------+
| id          | bigint(20)   | NO   | PRI | NULL    | auto_increment |
| seat_no     | varchar(255) | NO   |     | NULL    |                |
| model_id_id | bigint(20)   | YES  | MUL | NULL    |                |
+-------------+--------------+------+-----+---------+----------------+

如何在JDL-Studio中为(seat_no,model_id_id)列组合应用唯一约束？

如果在JDL-Studioi中无法实现这一点,还有其他任何方法可以实现这一目标吗？