Associations - Composition and Aggregation - Aggregation
4 important questions on Associations - Composition and Aggregation - Aggregation
What is the AggregatonKind of an aggrgation?
Why is the AggregationKind "Shared"?
How do we read this diagram?
A Book has many Authors
or
An Author is a shared part of many Books
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Unfortunately, as you might realize, the semantics of an aggregation is nearly identical to that of a ....?
Unfortunately, as you might realize, the semantics of an aggregation is nearly identical to that of a regular association.
Anytime we use an aggregation, we could probably replace it with a plain association.
You should only use an aggregation if you want to emphasize a part-like relationship, but one that is not as strong as a composition.
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