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Physical Database Design

Physical Database Design
Hashing algorithm converts a primary key value into a record address.

True
False

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

False
True

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Physical Database Design
In general, larger block sizes are used for online transaction processing applications and smaller block sizes are used for databases with a decision support or data warehousing system.

True
False

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

All fields are stored in three relations.
All fields are stored in four relations.
All fields are stored in two relations.
All fields are stored in one relation.

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Physical Database Design
An extent is a contiguous section of disk storage space.

True
False

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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?

CHAR
NUMBER
VARCHAR2
LONG

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