Meaning and features of Cardinality and Modality
Write down the meaning and features of Cardinality and Modality? Briefly illustrate the terms.
Expert
Cardinality:
a) It is the number of occurrence of one object associated to the number of occurrence of the other object. b) One to One [1:1] c) One to Many [1: N] d) Many to Many [M: N]
Modality:
Whether or not a specific data object should participate in a relationship.
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