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I want to model a association between two classes in UML, that says “an object of class A can have 0 objects of class B or 6 objects of class B”. I don’t want 0 to 6 elements, I want 0 or 6, nothing in between.
How do I model this? 0 to 6 is “0..6”, but was is 0 or 6? Must I use an OCL constrain?
I’m using Magic Draw.
Thanks.
You can represent multiple groupings with commas i.e.
1..3, 5..6for leaving 4 out of a list from 1 to 6, so I don’t see why you can’t do that with distinct numbers i.e.0, 6