Database Management Systems (3130703) MCQs

MCQs of Data Models

Showing 21 to 30 out of 40 Questions
1 2 3 4
21.

Specilization proceed in which manner?

(a)

top down
(b)

bottom up
(c)

middle
(d)

central
Answer:

Option (a)

22.

Generalization proceed in which manner?

(a)

top down
(b)

bottom up
(c)

middle
(d)

central
Answer:

Option (b)

23.

Generalization is inverse of the _________

(a)

sub class
(b)

weak entity set
(c)

specilization
(d)

super class
Answer:

Option (c)

24.

The same entity set participates in a relationship set more than once then it is called __________

(a)

Recursive relationship set
(b)

Descriptive attributes
(c)

Partial relationship set
(d)

Relational relationship set
Answer:

Option (a)

25.

A recursive relationship is a relationship between an entity and _______

(a)

itself
(b)

subtype entity
(c)

supertype entity
(d)

instant entity
Answer:

Option (a)

26.

Properties that describe the characteristic of an entities are called _____________

(a)

entities
(b)

attributes
(c)

indentifier
(d)

relationship
Answer:

Option (b)

27.

Entities of same type are grouped into _________

(a)

database
(b)

entityset
(c)

attributes
(d)

ERD
Answer:

Option (b)

28.

An entity is a _____________

(a)

animal, place or subject
(b)

animal, place or location
(c)

person, place or object
(d)

animal, place or object
Answer:

Option (c)

29.

Which of the following is not an entity?

(a)

Student
(b)

Professor
(c)

Car
(d)

Name
Answer:

Option (d)

30.

Which of the following is not an attributes of Student entity.

(a)

Name
(b)

Address
(c)

Age
(d)

Salary
Answer:

Option (d)

Showing 21 to 30 out of 40 Questions
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