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Logical Database Design

Logical Database Design
A primary key may be null.

True
False

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Logical Database Design
When mapping a multivalued attribute into a relation which of the following is true?

Three relations are created.
Four relations are created.
Two relations are created.
One relation is created.

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Logical Database Design
An enterprise key is a primary key whose value is unique for a given relation.

False
True

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Logical Database Design
A candidate key must uniquely identify each row.

True
False

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Logical Database Design
If no multivalued attributes exist and no partial dependencies exist in a relation, then the relation is in what normal form?

Third normal form
Fourth normal form
First normal form
Second normal form

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Logical Database Design
In a 1:M relationship, the primary key on the one side migrates to the many side to become the foreign key on the many side.

False
True

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