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Dictionary Representation in Dictionary

I am creating UML diagrams that will represent C # code and I am a bit stumped. I currently represent Dictionary<object, object>

using a qualified association where qualification is the type of the key and the class at the end of the association is the type of the value.

Now I would like to introduce the type in UML, for example Dictionary<int, Dictionary<object, object>

. Is there any standard I can use to create relationships that accurately represent this relationship?

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This line with angle brackets is just a declaration that says what kind of relationship the class will have. You cannot show the declaration in UML, except for a note (it might be useful too). But you can (and should) show the relationship itself. In practice, a string Dictionary<int, Dictionary<object, object>

can be taken as a strict declaration of a simple class diagram.



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