CODEWITHSUNDEEP
inheritanceumlclass-diagrammultiplicity
Clément
Clément

Reputation: 2686

UML Class Diagram -- Multiplicity for Inheritance

My understanding is that, in UML class diagrams, inheritance is a particular kind of association.

An association can have a multiplicity.

However, it seems that inheritance is never represented with a multiplicity.

Why? Is it because the multiplicity is always 1..1 and 0..1 (example below)?

enter image description here

Upvotes: 1

Views: 5210

Answers (1)

Ister
Ister

Reputation: 6328

inheritance is a particular kind of association

This is a fundamental misunderstanding. Generalization (aka inheritance) is a particular kind of relationship but it is not an association.

Thus there is no multiplicity for it. Also as already mentioned it would make no sense to have one.

Generalization is on a class level. If a class B is a specialized class of class A, then all elements that are of type B are at the same time also of type A.

Upvotes: 11

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