The ____________________ constraint specifies whether each entity supertype occurrence must also be a member of at least one subtype.
Correct Answer:
Verified
Q41: _ completeness means that not every supertype
Q46: Specialization is based on grouping _ characteristics
Q47: The "_" characteristic of a primary key
Q48: The "_" characteristic of a primary key
Q48: Surrogate primary keys are especially helpful when
Q48: An entity cluster is considered "virtual" or
Q52: Usually, a data modeler uses a natural
Q53: A _ occurs when you have one
Q54: The "_" characteristic of a primary key
Q57: keys work with primary keys to properly
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