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ER Model and Business Rules

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

False
True

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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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ER Model and Business Rules
An entity instance of a subtype represents the same entity instance of a supertype.

True
False

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ER Model and Business Rules
When an entity instance must be a member of only one subtype, it is which of the following?

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

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ER Model and Business Rules
A supertype can only have only one subtype.

True
False

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

Enabler
Integrity Control
Authorization
Condition

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