Logical Database Design

Logical Database Design
Weak entities do not get mapped into a relation.

False

True

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Logical Database Design
The relational model consists of:

data redundancy.

unorganized data.

operations using non-SQL languages.

data in the form of tables.

data redundancy.

unorganized data.

operations using non-SQL languages.

data in the form of tables.

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

First normal form

Fourth normal form

Third normal form

Second normal form

First normal form

Fourth normal form

Third normal form

Second normal form

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Logical Database Design
A synonym is two or more attributes that have different names but the same meaning.

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?

First normal form

Second normal form

Third normal form

Fourth normal form

First normal form

Second normal form

Third normal form

Fourth normal form

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Logical Database Design
Normalization is a formal process for deciding which attributes should be grouped together in a relation.

False

True

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