ER Model and Business Rules – True or False

1. Packaged data models are meant to be exactly right straight out of the box.

A. True
B. False

Correct Answer:  B. False

2. An action assertion is a statement that expresses some aspect of the static structure of the organization.

A. True
B. False

Correct Answer:  B. False

3. A supertype can only have only one subtype.

A. True
B. False

Correct Answer:  B. False

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

A. True
B. False

Correct Answer:  B. False

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

A. True
B. False

Correct Answer:  A. True

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