EXAMIANS
A supertype can only have only one subtype.
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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.
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An action assertion is a statement that expresses some aspect of the static structure of the organization.
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Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.
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It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.
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Action assertions have traditionally been implemented within an application program.
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Which one of the following symbols is not used in an ERD?
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Which of the following is not one of the three ways to classify an action assertion?
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A supertype/subtype hierarchy is which of the following?
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A rectangle represents which of the following in an EER?
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