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Computer Science Set-1
Databases
58

Databases MCQ with Answers

58) Which database level is closest to the users

External

Internal

Physical

Conceptual

Answer is:

External

Databases MCQ with Answers

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Related Databases MCQ with Answers

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.

62) Which of the operations constitute a basic set of operations for manipulating relational data?

Predicate calculus

Relational calculus

Relational algebra

None of the above

Answer is:

Relational algebra

63) Which of the following is another name for weak entity

Child

Owner

Dominant

All of the above

Answer is:

Child

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