如何为广义类图创建表？

Question

我正在开发一个在线求职门户网站。在班级图中，我概括了雇主& Employee as Members class &我把'MID'作为主键。现在我很困惑如何为Employer & Employee创建表？你需要

Answer 1

这里是表：

Member 
======== 
Id (or MId) (PK) 
... (Specifications you need) 

Employer 
======== 
Id (PK) 
MId (FK to Member table) 
... (Specifications you need) 

Employee 
======== 
Id (PK) 
MId (FK to Member table) 
EId (FK to Employer table) 
... (Specifications you need)