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Physical Database Design

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

VARCHAR2
NUMBER
LONG
CHAR

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

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

True
False

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

True
False

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