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Q.

The number of attributes in relation is called as its

A

Cardinality

B

Degree

C

Tuples

D

Entity

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MCQ

1.

_________ joins are SQL server default

A

Outer

B

Inner

C

Equi

D

None of the mentioned

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

D

Intersection

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MCQ

3.

The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

A

Join

B

Cartesian product

C

Intersection

D

Set difference

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4.

The _______ operator takes the results of two queries and returns only rows that appear in both result sets.

A

Union

B

Intersect

C

Difference

D

Projection

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5.

Which of the following is a fundamental operation in relational algebra?

A

Set intersection

B

Natural join

C

Assignment

D

None of the mentioned

Discussion

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