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.

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 25 of 31

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Q241.

The primary key of the representation of a weak entity set consists of the primary key of the strong entity set and the _______

Discriminator of the weak entity set

Foreign key

Primary key of all the other entity sets

All the attributes of the weak entity set

Discuss

Answer: (a).Discriminator of the weak entity set

Q242.

For a binary many to many relationship, the ________ of the participating entity sets becomes the prime attribute

Intersection of primary keys

Primary key of either one

Union of primary keys

Primary key on the many side

Discuss

Answer: (c).Union of primary keys

Q243.

For a binary one to one relationship, the ________ of the participating entity sets becomes the prime attribute

Intersection of primary keys

Primary key of either one

Union of primary keys

Primary key on the many side

Discuss

Answer: (b).Primary key of either one

Q244.

For a n-ary relationship set without arrows, the ________ of the participating entity sets becomes the prime attribute

Intersection of primary keys

Primary key of either one

Union of primary keys

Primary key on the many side

Discuss

Answer: (c).Union of primary keys

Q245.

State true or false: The schema for the relationship set linking a weak entity set to its corresponding strong entity set is redundant.

True

False

May be

Can't say

Discuss

Answer: (a).True

Q246.

Statement 1: We can create foreign key constraints on relational schema derived from ER diagram
Statement 2: Relational schema cannot be derived from an ER diagram

Both the statements are true

Both the statements are false

Statement 1 is true and Statement 2 is false

Statement 2 is true and statement 1 is false

Discuss

Answer: (c).Statement 1 is true and Statement 2 is false

Q247.

Which of the following can affect the placement of the relationship attributes?

Alphabetical order

The data in the attribute

Cardinality ratio

None of the mentioned

Discuss

Answer: (c).Cardinality ratio

Q248.

The process of designating sub groupings within the entity set is called as _______

Specialization

Division

Aggregation

Finalization

Discuss

Answer: (a).Specialization

Q249.

State true or false: Specialization can be applied only once

True

False

May be

Can't say

Discuss

Answer: (a).True

Q250.

Which of the following is the specialization that permits multiple sets

Superclass specialization

Disjoint specialization

Overlapping specialization

None of the mentioned

Discuss

Answer: (c).Overlapping specialization

Page 25 of 31

Welcome to the The Entity Relationship Approach MCQs Page

The Entity Relationship Approach MCQs | Page 25 of 31

Explore more Topics under DBMS

DBMS Basics

Data Models

Relational Databases

Data Storage and Querying

Relational Algebra

Normalization

Storage and File Structures

Indexing and Hashing

Transactions

Concurrency Control

Recovery System

Distributed Databases

SQL

Data Warehousing and Data Mining

RDBMS

Advanced SQL

SQL Queries,Constraints and Triggers

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