Data Models Questions

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1.

In a Hierarchical model records are organized as

A

Graph

B

List

C

Links

D

Tree

Correct Answer: D

None.

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2.

Conceptual design

A

is a documentation technique.

B

needs data volume and processing frequencies to determine the size of the database.

C

involves modelling independent of the DBMS.

D

is designing the relational model.

Correct Answer: C

None.

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3.

SET concept is used in :

A

Network Model

B

Hierarchical Model

C

Relational Model

D

None of these

Correct Answer: A

None.

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4.

The conceptual model is

A

dependent on hardware.

B

dependent on software.

C

dependent on both hardware and software .

D

independent of both hardware and software.

Correct Answer: D

None.

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5.

Which of the following is record based logical model?

A

Network Model

B

Object oriented model

C

E-R Model

D

None of these

Correct Answer: A

None.

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6.

Hierarchical model is also called

A

Tree structure

B

Plex Structure

C

Normalize Structure

D

Table Structure

Correct Answer: A

None.

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7.

An ________ is a set of entities of the same type that share the same properties, or attributes.

A

Entity set

B

Attribute set

C

Relation set

D

Entity model

Correct Answer: A

None.

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8.

Entity is a _________

A

Object of relation

B

Present working model

C

Thing in real world

D

Model of relation

Correct Answer: C

None.

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9.

The descriptive property possessed by each entity set is _________

A

Entity

B

Attribute

C

Relation

D

Model

Correct Answer: B

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10.

The function that an entity plays in a relationship is called that entity's _____________

A

Participation

B

Position

C

Role

D

Instance

Correct Answer: C

None.

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