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Welcome to the The Entity Relationship Approach MCQs Page

Dive deep into the fascinating world of The Entity Relationship Approach with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of The Entity Relationship Approach, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of The Entity Relationship Approach, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within DBMS.

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Check out the MCQs below to embark on an enriching journey through The Entity Relationship Approach. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of DBMS.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of The Entity Relationship Approach. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

The Entity Relationship Approach MCQs | Page 9 of 31

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Q81.
A subtype discriminator is which of the following?

a.

An attribute of the supertype whose values determine the subtype

b.

An attribute of the subtype whose values determine the supertype

c.

An attribute of the supertype whose values determine the supertype

d.

An attribute of the subtype whose values determine the subtype

Discuss
Answer: (a).An attribute of the supertype whose values determine the subtype
Q82.
A supertype/subtype hierarchy is which of the following?

a.

Each subtype has only one attribute.

b.

Each supertype has only one attribute.

c.

Each subtype has only one supertype.

d.

Each supertype has only one subtype.

Discuss
Answer: (c).Each subtype has only one supertype.
Q83.
A supertype/subtype hierarchy has which of the following features?

a.

Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype.

b.

Attributes are assigned at the highest logical level.

c.

Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype.

d.

Attributes are assigned at the lowest logical level.

Discuss
Answer: (b).Attributes are assigned at the highest logical level.
Q84.
In a relational schema, each tuple is divided into fields called

a.

Relations

b.

Domains

c.

Queries

d.

All of the above

Discuss
Answer: (b).Domains
Q85.
A _____ means that one record in a particular record type may be related to more than one record of another record type.

a.

One-to-one relationship

b.

One-to-many relationship

c.

Many-to-one relationship

d.

Many-to many relationship

Discuss
Answer: (b).One-to-many relationship
Q86.
A _____ means that one record in a particular record type is related to only one record of another record type.

a.

One-to-one relationship

b.

One-to-many relationship

c.

Many-to-one relationship

d.

Many-to-many relationship

Discuss
Answer: (a).One-to-one relationship
Q87.
The way a particular application views the data from the data base that the application uses is a :

a.

module

b.

relational model

c.

schema

d.

subschema

Discuss
Answer: (d).subschema
Q88.
A scheme describes

a.

data elements

b.

records and files

c.

record relationships

d.

All of the above

Discuss
Answer: (d).All of the above
Q89.
A _____ means that one record in a particular record type can be related to many records in another record type and vice-versa.

a.

One-to-one relationship

b.

One-to-many relationship

c.

Many-to-one relationship

d.

Many-to-many relationship

Discuss
Answer: (d).Many-to-many relationship
Q90.
Which of the following situation requires the use of ID-dependent entities?

a.

Association relationships only

b.

Multivalued attributes only

c.

Archetype/instance relationships only

d.

All of the above use ID dependent entities

Discuss
Answer: (d).All of the above use ID dependent entities
Page 9 of 31

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