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 17 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

Q161.

SQL Server automatically creates an index on:

primary keys only.

foreign key only.

both primary and foreign keys.

SQL Server never automatically creates an index.

Discuss

Answer: (c).both primary and foreign keys.

Q162.

Which of the following is not a factor in determining the concurrency control behavior of SQL Server?

Lock level

Transaction isolation level

Cursor concurrency setting

Locking hints

Discuss

Answer: (a).Lock level

Q163.

SQL Server program code that is executed after an SQL command has been processed is called a(n):

INSTEAD OF trigger.

BEFORE trigger.

AFTER trigger.

BEGIN trigger.

Discuss

Answer: (c).AFTER trigger.

Q164.

Which of the following refers to the SQL Server transaction isolation level which places and holds locks on all rows that are read?

REPEATABLE READ

SERIALIZABLE

READ COMMITTED

READ UNCOMMITTED

Discuss

Answer: (a).REPEATABLE READ

Q165.

The command to remove rows from a table 'CUSTOMER' is:

REMOVE FROM CUSTOMER ...

DROP FROM CUSTOMER ...

DELETE FROM CUSTOMER WHERE ...

UPDATE FROM CUSTOMER ...

Discuss

Answer: (c).DELETE FROM CUSTOMER WHERE ...

Q166.

The SQL WHERE clause:

limits the column data that are returned.

limits the row data are returned.

Both a and b are correct.

Neither a nor b are correct.

Discuss

Answer: (b).limits the row data are returned.

Q167.

SQL data definition commands make up a(n) ________ .

DDL

DML

HTML

XML

Discuss

Answer: (a).DDL

Q168.

The SQL keyword(s) ________ is used with wildcards.

LIKE only

IN only

NOT IN only

IN and NOT IN

Discuss

Answer: (a).LIKE only

Q169.

Which of the following is the correct order of keywords for SQL SELECT statements?

SELECT, FROM, WHERE

FROM, WHERE, SELECT

WHERE, FROM,SELECT

SELECT,WHERE,FROM

Discuss

Answer: (a).SELECT, FROM, WHERE

Q170.

A subquery in an SQL SELECT statement is enclosed in:

braces -- {...}.

CAPITAL LETTERS.

parenthesis -- (...) .

brackets -- [...].

Discuss

Answer: (c).parenthesis -- (...) .

Page 17 of 38

Welcome to the SQL MCQs Page

SQL MCQs | Page 17 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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