Databases-ER-Model [GATE (Graduate Aptitude Test in Engineering) Computer Science]: Questions 1 - 5 of 21

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Question 1

ER-Model

Question

MCQ▾

E-R diagram can represent the overall ________structure of a database graphically

Choices

Choice (4)Response

a.

Structure

b.

Physical structure

c.

Logical structure

d.

None of the above

Question 2

ER-Model

Question

MCQ▾

ER model is used in which phase

Choices

Choice (4)Response

a.

schema refinement

b.

conceptual data base

c.

physical refinement

d.

All of the above

Question 3

ER-Model

Appeared in Year: 2015 (UGC-NET)

Question

MCQ▾

Which of the following provides the best description of an entity type? (December)

Choices

Choice (4)Response

a.

A value given to a particular attribute (e. g. height-230 cm)

b.

A thing that we wish to collect data about zero or more, possibly real world examples of it may exist.

c.

A specific concrete object with a defined set of processes (e. g. Jatin with diabetes)

d.

A template for a group of things with the same set of characteristics that may exist in the real world

Question 4

ER-Model

Appeared in Year: 2010 (UGC-NET)

Question

MCQ▾

In generalization, the differences between members of an entity is (December Paper II)

Choices

Choice (4)Response

a.

minimized

b.

maximized

c.

None of the above

d.

All of the above

Question 5

ER-Model

Appeared in Year: 2010 (UGC-NET)

Question

MCQ▾

An entity instance is a single occurrence of an ________. (June Paper II)

Choices

Choice (4)Response

a.

entity and relationship type

b.

entity type

c.

relationship type

d.

All of the above

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