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Cardinality
Expresses the minimum and the maximum number of instances of an entity B that can be associated with an instance of an entity A. The minimum and the maximum number of instances can be equal to 0,1, or N.
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Expresses the minimum and the maximum number of instances of an entity B that can be associated with an instance of an entity A. The minimum and the maximum number of instances can be equal to 0,1, or N.
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