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ER Model and Business Rules

ER Model and Business Rules
Which of the following is not one of the three ways to classify an action assertion?

Integrity Control
Condition
Authorization
Enabler

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ER Model and Business Rules
Packaged data models are meant to be exactly right straight out of the box.

True
False

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ER Model and Business Rules
When an entity instance may be a member of multiple subtypes or it does not have to be a member of a subtype, it is which of the following?

Overlap with total specialization
Overlap with partial specialization
Disjoint with total specialization
Disjoint with partial specialization

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ER Model and Business Rules
A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).

False
True

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

True
False

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