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ER Model and Business Rules

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

False
True

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

All of these
A singular noun
Concise
Specific to the organization

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

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ER Model and Business Rules
Generalization is the process of defining more general entity types from a set of more specialized entity types.

False
True

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ER Model and Business Rules
There is cardinality on an EER between the supertype and subtype.

False
True

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ER Model and Business Rules
An action assertion must include which of the following?

Corresponding object
All of these
Anchor object
Action

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