PHYSICAL DATABASE DESIGN QUIZ

Which of the following is not a factor to consider when switching from small to large block size?

The length of all of the fields in a table row

Random row access speed

The number of columns

Block contention

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

All fields are stored in two relations.

All fields are stored in three relations.

All fields are stored in four relations.

All fields are stored in one relation.

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

False

True

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A multidimensional database model is used most often in which of the following models?

Data warehouse

Relational

Hierarchical

Network

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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 four relations.

All fields are stored in one relation.

All fields are stored in two relations.

All fields are stored in three relations.

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Selecting a data type involves which of the following?

Maximize storage space

All of these

Represent most values

Improve data integrity

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Hashing algorithm converts a primary key value into a record address.

False

True

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When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space.

True

False

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A bitmap index is an index on columns from two or more tables that come from the same domain of values.

True

False

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

True

False

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