Randol
2021-02-19T02:46:51+00:00
昨天留的练习题,刚学数据库一对多多对多设计有点蒙蔽,求大佬帮看一下
[img]https://img.nga.178.com/attachments/mon_202102/23/-7Q8g1y-60jK12T3cSos-a8.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202102/23/-7Q8g1y-60jK12T3cSos-a8.jpg[/img]