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MCQ

Q.

An entity set that does not have sufficient attributes to form a primary key is a

A

strong entity set.

B

weak entity set.

C

simple entity set.

D

primary entity set.

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Similar Questions

MCQ

1.

The _______operation performs a set union of two

A

Union

B

Join

C

Product

D

Intersect

Discussion

MCQ

2.

The ___________ operation, denoted by -, allows us to find tuples that are in one relation but are not in another.

A

Union

B

Set difference

C

Difference

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Intersection

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MCQ

3.

An attribute in a relation is a foreign key if the _______ key from one relation is used as an attribute in that relation.

A

Candidate

B

Primary

C

Super

D

Sub

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4.

Which of the following is not outer join?

A

Left outer join

B

Right outer join

C

Full outer join

D

All of the mentioned

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MCQ

5.

The intersection operator is used to get the _____ tuples.

A

Different

B

Common

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All

D

Repeating

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