UML Diagram

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7 Terms

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Aggregation

Consists of

Part of

Has

Incorporates

Belongs to

Open diamond

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Generalization

Kind of

Type of

Solid line with open arrowhead

3
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Association

Affects

Solid line with no arrowheads

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Dependencies

Uses

Dashed lines with arrowheads

5
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Multiplicity

Number on end of relationships

6
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Types of Association

Aggregation (open diamond)

Composition (closed diamond)

One class is related to many instances of another class

7
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Differences between Aggregation and Composition

Aggregation does not say much about the lifetime of the object instance

Composition has a responsibility for managing the lifetime of the constituent objects