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Physical Database Design

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

True
False

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Physical Database Design
Two basic constructs to link one piece of data with another piece of data: sequential storage and pointers.

True
False

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Physical Database Design
A secondary key is which of the following?

Primary key
Useful for denormalization decisions
Determines the tablespace required
Nonunique key

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

LONG
NUMBER
CHAR
VARCHAR2

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

False
True

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

Very fast
Moderately fast
Impractical
Slow

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