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MCQ

Q.

Which of the following is a single valued attribute

A

Register_number

B

Address

C

SUBJECT_TAKEN

D

Reference

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1.

The attribute AGE is calculated from DATE_OF_BIRTH. The attribute AGE is

A

Single valued

B

Multi valued

C

Composite

D

Derived

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2.

Not applicable condition can be represented in relation entry as

A

NA

C

"NULL"

D

Blank Space

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3.

Hierarchical model is also called

A

Tree structure

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Plex Structure

C

Normalize Structure

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Table Structure

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In a Hierarchical model records are organized as

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Graph

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List

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Links

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An ________ is a set of entities of the same type that share the same properties, or attributes.

A

Entity set

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Attribute set

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Relation set

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Entity model

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