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MCQ

Q.

The entity set person is classified as student and employee. This process is called _________

A

Generalization

B

Specialization

C

Inheritance

D

Constraint generalization

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MCQ

1.

____________ is preferred method for enforcing data integrity

A

Constraints

B

Stored Procedure

C

Triggers

D

Cursors

Discussion

MCQ

2.

An entity set that does not have sufficient attributes to form a primary key is termed a __________

A

Strong entity set

B

Variant set

C

Weak entity set

D

Variable set

Discussion

MCQ

3.

E-R model uses this symbol to represent weak entity set ?

A

Dotted rectangle.

B

Diamond

C

Doubly outlined rectangle

D

None of these

Discussion

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4.

The Rectangles divided into two parts represents

A

Entity set

B

Relationship set

C

Attributes of a relationship set

D

Primary key

Discussion

MCQ

5.

A primary key is combined with a foreign key creates

A

Parent-Child relation ship between the tables that connect them

B

Many to many relationship between the tables that connect them

C

Network model between the tables that connect them

D

None of the mentioned

Discussion

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