Database Management Systems (3130703) MCQs

MCQs of Data Models

Showing 11 to 20 out of 40 Questions
11.

An entity type whose existence depends on another entity type is called a _____ entity

(a)

Strong

(b)

Weak

(c)

Codependent

(d)

Variant

Answer:

Option (b)

12.

A property or characteristic of an entity type that is of interest to the organization is called an _________

(a)

Attribute

(b)

Coexisting entity

(c)

Relationship

(d)

Cross-function

Answer:

Option (a)

13.

Attribute which can be devided in to the subparts are called ___________

(a)

simple

(b)

composite

(c)

multivalued

(d)

derived

Answer:

Option (b)

14.

Attributes having more than one values are called ___________

(a)

simple

(b)

composite

(c)

multivalued

(d)

derived

Answer:

Option (c)

15.

Attributes whose values are derived from other attributes are called _______

(a)

simple

(b)

composite

(c)

multivalued

(d)

derived

Answer:

Option (d)

16.

Graphical representation of attributes and their relationship is called _______

(a)

Flow Chart

(b)

ER Diagram

(c)

State Diagram

(d)

Data Flow Diagram

Answer:

Option (b)

17.

_______ represent the no of entities of another entity set which are connected to an entity using a relationship set.

(a)

mapping cardinality

(b)

cardinality constraint

(c)

relationship

(d)

connection

Answer:

Option (a)

18.

There are _______ types of mapping cardinality

(a)

1

(b)

2

(c)

3

(d)

4

Answer:

Option (d)

19.

________ is an entity from which another entity can be derived.

(a)

super class

(b)

sub class

(c)

first class

(d)

last class

Answer:

Option (a)

20.

________ is an entity which can be derived another entity.

(a)

super class

(b)

sub class

(c)

first class

(d)

last class

Answer:

Option (b)

Showing 11 to 20 out of 40 Questions