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Questions and Answers
What is the purpose of an association class?
What is the purpose of an association class?
- To model complex relationships with attributes and operations (correct)
- To label the ends of associations with roles
- To transform simple associations into classes
- To denote relationships between classes
How are association classes depicted in UML diagrams?
How are association classes depicted in UML diagrams?
- With a solid diamond
- With a dashed line connected to the association symbol (correct)
- With a class symbol connected by a solid line
- With a class symbol connected by a dashed line
What is the difference between aggregation and composition?
What is the difference between aggregation and composition?
- Aggregation is depicted by a solid line, composition by a solid diamond
- Aggregation is a 'consists of' hierarchy, while composition implies components cannot exist without the aggregate (correct)
- Aggregation denotes inheritance, composition does not
- Aggregation is a special case of association, while composition is a form of inheritance
What does labeling the ends of associations with roles allow us to do?
What does labeling the ends of associations with roles allow us to do?
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What is the purpose of multiplicity in an association end?
What is the purpose of multiplicity in an association end?
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How can an association class be converted into a class?
How can an association class be converted into a class?
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