如何*真的*写UML基数? [英] How to *really* write UML cardinalities?

问题描述

我想一劳永逸地知道如何编写UML基数，因为我经常不得不就它们进行辩论(因此非常欢迎提供证明和资料:)

I would like to know once and for all how to write UML cardinalities, since I very often had to debate about them (so proofs and sources are very welcome :)

如果我想解释说一个母亲可以有几个 Child ren ，但是一个 Child 我只有一个母亲 ，我应该这样写:

If I want to explain that a Mother can have several Children but a Child has one and only one Mother, should I write:

Mother * ---------- 1 Child

或

Mother 1 ---------- * Child

?

推荐答案

第二个母亲1 ----------------- 1 .. *孩子

the second one Mother 1 ----------------- 1..* Child

您可以在 UML规范中找到许多与抽象语法相关的图的示例...

You would find many example in the UML specification for all figure related to the Abstract Syntax...

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