Showing unidirectional & bidirectional aggregation
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Posted By:   Suresh_Addagalla
Posted On:   Thursday, August 30, 2001 05:37 AM

I have two classes, say A and B. A has a member variable of B and B also has a member variable of type A. A actually instantiates B and passes a reference of self to B's constructor. B then stores the reference of A in its member variable. How do I show this kind of aggregation in a UML diagram?

Also, I would like to know the difference between uni-directional & bi-directional aggregation & composition. Examples would be highly useful.


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