Entity Relationship (ER) Modeling Questions

MCQ bookmark_border

1.

In the relational modes, cardinality is termed as:

A

Number of tuples.

B

Number of attributes.

C

Number of tables.

D

Number of constraints.

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

2.

. In an E-R diagram attributes are represented by

A

rectangle

B

square

C

ellipse

D

triangle

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

3.

In an E-R diagram an entity set is represent by a

A

rectangle

B

ellipse

C

diamond box.

D

circle

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

4.

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

A

Dotted rectangle.

B

Diamond

C

Doubly outlined rectangle

D

None of these

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

5.

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

A

Unary

B

Binary

C

Ternary

D

Quaternary

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

6.

A set of possible data values is called

A

attribute

B

degree

C

tuple

D

domain

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

7.

Which of the following is another name for weak entity?

A

Child

B

Owner

C

Dominant

D

All of the above

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

8.

In E-R Diagram relationship type is represented by

A

Ellipse

B

Dashed ellipse

C

Rectangle

D

Diamond

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

9.

In E-R diagram generalization is represented by

A

Ellipse

B

Dashed ellipse

C

Rectangle

D

Triangle

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

10.

A relational database consists of a collection of

A

Tables

B

Fields

C

Records

D

Keys

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion