建立三元关系 [英] Creating a Ternary Relationship

问题描述

如何使用电源设计器建立三元关系?

How can I make ternary relationship using power designer?

推荐答案

简短的答案是您不能. 但是您可以代表相同的概念.

The short answer is that you cannot. But you can represent the same concept.

假设您尝试在概念数据模型中执行此操作，这取决于您正在使用的符号(在Tools > Models Options下).

Assuming you trying to do that in the Conceptual Data Model, it depends of the Notation you are using (under Tools > Models Options).

使用实体/关系，看来您做不到.

With Entity/Relationship, it looks like you cannot do it.

使用Merise，您可以创建一个指向3个实体的链接的关联.

With Merise, you create an Association with links toward the 3 entities.

使用IDEF1X，您可以创建一个对这3个实体具有依赖关系的实体.

With IDEF1X, you create an Entity with dependent relationships toward the 3 entities.

这篇关于建立三元关系的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！