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Computer Science Set-1
Databases
49

Databases MCQ with Answers

49) Which of the following are the properties of entities

Groups

Table

Attributes

Switchboards

Answer is:

Attributes

Databases MCQ with Answers

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Related Databases MCQ with Answers

51) It is better to use files than a DBMS when there are

Stringent real-time requirements

Multiple users wish to access the data

Complex relationships among data

All of the above.

Answer is:

Multiple users wish to access the data

52) The conceptual model is

Dependent on hardware

Dependent on software.

Dependent on both hardware and software

Independent of both hardware and software

Answer is:

Independent of both hardware and software

53) What is a relationship called when it is maintained between two entities?

Unary

Binary

Ternary

Quaternary

Answer is:

Binary

54) Which of the following operation is used if we are interested in only certain columns of a table

PROJECTION

SELECTION

UNION

JOIN

Answer is:

PROJECTION

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