A subtype discriminator is which of the following?
Answer: A
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A supertype/subtype hierarchy is which of the following?
Answer: C
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Total specialization is represented by double lines between the supertype and subtype on an EER.
Answer: A
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Packaged data models are meant to be exactly right straight out of the box.
Answer: B
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An action assertion is a statement that expresses some aspect of the static structure of the organization.
Answer: B
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A supertype is an entity type that shares common attributes or relationships distinct from other subgroupings.
Answer: B
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Which one of the following symbols is not used in an ERD?
Answer: D
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An action assertion must include which of the following?
Answer: D
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A supertype can only have only one subtype.
Answer: B
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An entity instance of a subtype represents the same entity instance of a supertype.
Answer: A
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