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A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).
An entity instance of a subtype represents the same entity instance of a supertype.
It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.
If an entity adheres to the disjoint rule, then an entity instance can be a member of more than one entity for a given supertype.
A supertype/subtype hierarchy is which of the following?
Use of a supertype/subtype relationship is necessary when which of the following exists?
A supertype/subtype hierarchy has which of the following features?
When mapping a supertype/subtype relationship which of the following is true?
A supertype can only have only one subtype.
There is cardinality on an EER between the supertype and subtype.