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Data modeling with er model Practice Questions & Answers

0 vote

An attribute describes the entity's characteristics.

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An attribute describes the entity's characteristics.

A).  True

B).  False

0 vote

A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.

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A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.

A).  True

B).  False

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All instances of an entity class have the same attributes.

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All instances of an entity class have the same attributes.

A).  True

B).  False

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A ternary relationship is so called because in contains two entities and one association between them.

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A ternary relationship is so called because in contains two entities and one association between them.

A).  True

B).  False

-1 vote

An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.

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An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.

A).  True

B).  False