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MCQ

Q.

A logical schema

A

is the entire database

B

is a standard way of organizing information into a accessible part

C

describe how data is actually stored on disk

D

none of these

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MCQ

1.

Which of the following holds data and processing instructions temporarily until the CPU needs it?

A

ROM

B

control unit

C

main memory

D

coprocessor chips

E

None of the above

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2.

Which of the following is not an manufacturer of Hard Disk drives?

A

Samsung

B

Intel

C

Seagate

D

Western Digital

E

None of these

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3.

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

A

all the tuples of R1

B

all the tuples of R2

C

all the tuples of R1 and R2

D

all the tuples of R1 and R2 which have common columns

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4.

A file manipulation command that extracts some of the records from a file is called

A

SELECT

B

PROJECT

C

JOIN

D

PRODUCT

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5.

A multi programming system is one that can

A

run very fast

B

share hardware resources with many programs simultaneously

C

compute many programs simultaneously

D

use many operating systems

E

None of the above

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