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ER Model and Business Rules

11.

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

Answer: A

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Answer: A

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Answer: A

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Answer: B

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15.

Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.

Answer: A

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16.

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

Answer: A

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17.

When an entity instance must be a member of only one subtype, it is which of the following?

Answer: A

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18.

A subtype entity name should be which of the following?

Answer: D

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Answer: B

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20.

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

Answer: B

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