Supertype/Subtype relationships should be used when the instances of a subtype participate in no relationships which are unique to that subtype.
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Q2: The process of defining one or more
Q23: A generic or template data model that
Q24: A generic data model is a good
Q36: An entity cluster is:
A) a formal method
Q42: Specialization is the reverse of generalization.
Q47: The overlap rule specifies that if an
Q50: A member of a subtype does NOT
Q53: An entity instance of a subtype represents
Q60: The disjoint rule specifies that if an
Q70: A subtype can become a supertype if
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