Define cardinality and modality, Software Engineering

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Define Cardinality & Modality.

Cardinality: Requirement of the number of occurrences of one that can be linked to number of occurrences of another.

Modality: The Modality of a relationship is 0 if there is no explicit need for the relationship to occur or the relationship is optional. The modality is 1 if an occurrence of the relationship is mandatory.

 


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