PHYSICAL DATABASE DESIGN QUIZ

Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process.

True

False

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Denormalization and clustering can work well to minimize data access time for small records.

False

True

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Distributing the columns of a table into several separate physical records is known as horizontal partitioning.

False

True

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If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?

All fields are stored in three relations.

All fields are stored in two relations.

All fields are stored in four relations.

All fields are stored in one relation.

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Sequential retrieval on a primary key for sequential file storage has which of the following features?

Slow

Moderately fast

Very fast

Impractical

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What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?

NUMBER

CHAR

LONG

VARCHAR2

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The primary goal of physical database design is data processing efficiency.

False

True

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The blocking factor is:

a group of fields stored in adjacent memory.

attributes grouped together by the same primary key.

the number of physical records per page.

attributes grouped together by the same secondary key.

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It is usually not very important to design the physical database to minimize the time required by users to interact with the information systems.

False

True

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A pointer is a detailed coding scheme recognized by system software for representing organizational data.

True

False

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