ER MODEL AND BUSINESS RULES QUIZ

Action assertions have traditionally been implemented within an application program.

False

True

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Generalization is the process of defining more general entity types from a set of more specialized entity types.

True

False

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A supertype can only have only one subtype.

True

False

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An ERD that has had the entities clustered will display more entities.

False

True

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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.

True

False

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A subtype entity name should be which of the following?

Specific to the organization

A singular noun

Concise

All of these

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A subtype discriminator is which of the following?

An attribute of the subtype whose values determine the supertype

An attribute of the supertype whose values determine the supertype

An attribute of the supertype whose values determine the subtype

An attribute of the subtype whose values determine the subtype

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Total specialization is represented by double lines between the supertype and subtype on an EER.

False

True

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A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).

True

False

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There is cardinality on an EER between the supertype and subtype.

False

True

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