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associationsumldiagram

Two roles in one association (UML diagram)

I have never seen two roles in a association relationship in a UML diagram. Is the following appropriate notation, or is there another method of listing two roles?

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Solution

  • Your diagrams says that Course has a property named 1 teaches of type Instructor. And Instructor has a property has a * of type Course.

    I guess that the 1 and * are multiplicities and they should be placed a bit apart from role names to distinguish them. The remaining role names should rather correspond to what the properties represent. So where currently you see 1 teaches it should be teacher and on the other side there should be classes (both with the multiplicities offset).