Welcome to the SQL MCQs Page

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

SQL MCQs | Page 7 of 38

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

Data Warehousing and Data Mining

15

RDBMS

16

Advanced SQL

17

SQL Queries,Constraints and Triggers

Q61.

A report generator is used to

update files

print files on paper

data entry

delete files

Discuss

Answer: (b).print files on paper

Q62.

Count function in SQL returns the number of

values

distinct values

groups

columns

Discuss

Answer: (a).values

Q63.

The statement in SQL which allows to change the definition of a table is

Alter

Update

Create

Select

Discuss

Answer: (a).Alter

Q64.

Which of the following is correct:

a SQL query automatically eliminates duplicates.

SQL permits attribute names to be repeated in the same relation.

a SQL query will not work if there are no indexes on the relations

None of these

Discuss

Answer: (d).None of these

Q65.

Which of the following is a valid SQL type?

CHARACTER

NUMERIC

FLOAT

All of the above

Discuss

Answer: (d).All of the above

Q66.

Which of the following is an advantage of view?

Data security

Derived columns

Hiding of complex queries

All of the above

Discuss

Answer: (d).All of the above

Q67.

Which of the following is a legal expression in SQL?

SELECT NULL FROM EMPLOYEE;

SELECT NAME FROM EMPLOYEE;

SELECT NAME FROM EMPLOYEE WHERE SALARY = NULL;

None of the above

Discuss

Answer: (b).SELECT NAME FROM EMPLOYEE;

Q68.

Which of the following is a comparison operator in SQL?

BETWEEN

All of the above

Discuss

Answer: (d).All of the above

Q69.

Which one of the following is not true for a view:

View is derived from other tables

View is a virtual table

A view definition is permanently stored as part of the database

View never contains derived columns

Discuss

Answer: (c).A view definition is permanently stored as part of the database

Q70.

To delete a particular column in a relation the command used is:

UPDATE

DROP

ALTER

DELETE

Discuss

Answer: (c).ALTER

Page 7 of 38

Welcome to the SQL MCQs Page

SQL MCQs | Page 7 of 38

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

Data Warehousing and Data Mining

RDBMS

Advanced SQL

SQL Queries,Constraints and Triggers

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