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MCQ

Q.

The _______operation performs a set union of two

A

Union

B

Join

C

Product

D

Intersect

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MCQ

1.

Which of the following symbol is used in the place of except?

A

^

B

V

D

~

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2.

Which of the following is used to denote the selection operation in relational algebra?

A

Pi (GREEK)

B

Sigma (GREEK)

C

Lambda (GREEK)

D

Omega (GREEK)

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3.

The union operation is represented by

A

?

B

U

D

*

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4.

For select operation the ________ appear in the subscript and the ___________ argument appears in the paranthesis after the sigma.

A

Predicates, relation

B

Relation, Predicates

C

Operation, Predicates

D

Relation, Operation

Discussion

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5.

A _____ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.

A

Rows

B

Key

C

Attribute

D

Fields

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