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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?

Enabler
Authorization
Integrity Control
Condition

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ER Model and Business Rules
An entity cluster is a set of one or more entity types and associated relationships.

False
True

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ER Model and Business Rules
Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.

True
False

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ER Model and Business Rules
It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.

True
False

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ER Model and Business Rules
Which one of the following symbols is not used in an ERD?

Rectangle
Diamond
Oval
Circle

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ER Model and Business Rules
A subtype entity name should be which of the following?

Concise
Specific to the organization
All of these
A singular noun

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