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Logical Database Design

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

False
True

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Logical Database Design
Relations are:

three-dimensional tables.
five-dimensional tables.
two-dimensional tables.
four-dimensional tables.

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Logical Database Design
Well-structured relations encourage anomalies of data.

True
False

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Logical Database Design
A composite attribute does not get mapped into a relation.

False
True

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Logical Database Design
A primary key is which of the following?

An attribute that uniquely identifies each column
A derived attribute
Any attribute
An attribute that uniquely identifies each row

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

True
False

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