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What is the purpose of the diamond-shaped notation in an association line between classes?a.To specify a multiplicity constraintb.To represent a bidirectional associationc.To denote a dependency between classesd.To indicate a composition relationship

Question

What is the purpose of the diamond-shaped notation in an association line between classes?a.To specify a multiplicity constraintb.To represent a bidirectional associationc.To denote a dependency between classesd.To indicate a composition relationship

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Solution

The diamond-shaped notation in an association line between classes is used to indicate a composition relationship. This means that one class is composed of one or more instances of another class. In other words, if the composed object is destroyed, so are the composing objects. This is a strong form of aggregation, and it implies ownership.

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