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Computer Science Set-1
Databases
56

Databases MCQ with Answers

56) Which of the following is an advantage of view

Data security

Derived columns

Hiding of complex queries

All of the above

Answer is:

All of the above

Databases MCQ with Answers

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Related Databases MCQ with Answers

58) Which database level is closest to the users

External

Internal

Physical

Conceptual

Answer is:

External

59) Which are the two ways in which entities can participate in a relationship

Passive and active

Total and partial

Simple and Complex

All of the above

Answer is:

Total and partial

60) The result of the UNION operation between R1 and R2 is a relation that includes

All the tuples of R1

All the tuples of R2

All the tuples of R1 and R2

All the tuples of R1 and R2 which have common columns

Answer is:

All the tuples of R1 and R2

61) A set of possible data values is called

Attribute

Degree.

Tuple.

Domain.

Answer is:

Domain.

Databases MCQ with Answers

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