如何在数字图中显示部分密钥

Question

在Chen的符号的部分密钥（ 鉴别器 ）中如虚线所示，在如何UML ER（实体关系）图中示出它们？

Answer 1

如果我没记错的话，UML将由您自行决定，并且不会区分部分密钥和其他组合密钥（在ER或UML中，弱实体和强实体之间的区别不太明显）。

Answer 2

I think that modeling database in an UML diagram is only possible if you add a JPA profile. This profile is associated to Java and could not be used with other languages. The idea is to synchronize stereotypes with Java annotations and then use Hibernate for the deployment. It works really well and allows the creation of very complex projects.
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