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Q.

Suppose the user finds the usage of room number and phone number in a relational schema there is confusion.This is reduced by

A

Unique

B

Unique

C

Role intergral assignment

D

None of the mentioned

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MCQ

1.

Identify the composite attributes

A

Salary

B

Credits

C

Section_id

D

None of the mentioned

Discussion

MCQ

2.

Relation R with an associated set of functional dependencies, F, is decomposed into BCNF. The redundancy (arising out of functional dependencies) in the resulting set of relations is

A

Zero

B

More than zero but less than that of an equivalent 3NF decomposition

C

Proportional to the size of F+

D

Indeterminate

Discussion

MCQ

3.

This type of decomposition is called

A

Lossless decomposition

B

Lossless

C

All of the mentioned

D

None of the mentioned

Discussion

MCQ

4.

a)

A

Be in Second Normal Form

B

Be in Third Normal Form

C

Have a single attribute key

D

Have a composite key

Discussion

MCQ

5.

Which normal form removes transitive dependencies?

A

1NF

B

2NF

C

3NF

D

BCNF

Discussion

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