Welcome to the RDBMS MCQs Page

Dive deep into the fascinating world of RDBMS with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of RDBMS, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of RDBMS, 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 RDBMS. 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 RDBMS. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

RDBMS MCQs | Page 3 of 8

Explore more Topics under DBMS

01

DBMS Basics

02

Data Models

03

The Entity Relationship Approach

04

Relational Databases

05

Data Storage and Querying

06

Relational Algebra

07

Normalization

08

Storage and File Structures

09

Indexing and Hashing

10

Transactions

11

Concurrency Control

12

Recovery System

13

Distributed Databases

14

SQL

15

Data Warehousing and Data Mining

16

Advanced SQL

17

SQL Queries,Constraints and Triggers

Q21.

If the decomposition is able to represent all the facts about the relation then such a decomposition is called as?

Lossless decomposition

Lossy decomposition

Insecure decomposition

Secure decomposition

Discuss

Answer: (a).Lossless decomposition

Q22.

A domain whose elements are indivisible is called as ______

Unique domain

Proxy domain

Atomic domain

Multiple domain

Discuss

Answer: (c).Atomic domain

Q23.

If all the domains are atomic then the relational schema is in ________ normal form

Discuss

Answer: (a).1

Q24.

State true or false: Composite attributes have non-atomic domains.

True

False

May be

Can't say

Discuss

Answer: (b).False

Q25.

State true or false: Redundancy is desired in a relational schema

True

False

May be

Can't say

Discuss

Answer: (b).False

Q26.

An instance of a relation that satisfies all real world constraints is known as?

Proper relation

Ideal relation

Perfect relation

Legal relation

Discuss

Answer: (d).Legal relation

Q27.

If K → R then K is said to be the _______ of R

Candidate key

Foreign key

Super key

Domain

Discuss

Answer: (c).Super key

Q28.

X → Y holds on a schema k(K) if?

At least one legal instance satisfies the functional dependency

No legal instance satisfies the functional dependency

Each and every legal instance satisfies the functional dependency

None of the mentioned

Discuss

Answer: (c).Each and every legal instance satisfies the functional dependency

Q29.

X→ Y is trivial if?

X ⊂ Y

Y ⊂ X

X ⊇ Y

None of the mentioned

Discuss

Answer: (a).X ⊂ Y

Q30.

Which of the following is not a condition for X→ Y in Boyce codd normal form?

X → Y is trivial

X is the superkey for the relational schema R

Y is the superkey for the relational schema R

All of the mentioned

Discuss

Answer: (c).Y is the superkey for the relational schema R

Page 3 of 8

Welcome to the RDBMS MCQs Page

RDBMS MCQs | Page 3 of 8

Explore more Topics under DBMS

DBMS Basics

Data Models

The Entity Relationship Approach

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

Advanced SQL

SQL Queries,Constraints and Triggers

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