adplus-dvertising

Welcome to the SQL Queries,Constraints and Triggers MCQs Page

Dive deep into the fascinating world of SQL Queries,Constraints and Triggers with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of SQL Queries,Constraints and Triggers, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of SQL Queries,Constraints and Triggers, 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.

frame-decoration

Check out the MCQs below to embark on an enriching journey through SQL Queries,Constraints and Triggers. 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 Queries,Constraints and Triggers. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

SQL Queries,Constraints and Triggers MCQs | Page 4 of 17

Explore more Topics under DBMS

Q31.
SELECT * FROM employee WHERE dept_name="Comp Sci";

In the SQL given above there is an error . Identify the error .

a.

Dept_name

b.

Employee

c.

“Comp Sci”

d.

From

Discuss
Answer: (c).“Comp Sci”
Q32.
Which one of the following has to be added into the blank to select the dept_name which has Computer Science as its ending string ? 
SELECT emp_name
FROM department
WHERE dept_name LIKE ’ _____ Computer Science’;

a.

%

b.

_

c.

||

d.

$

Discuss
Answer: (a).%
Q33.
’_ _ _ ’ matches any string of ______ three characters. ’_ _ _ %’ matches any string of at ______ three characters.

a.

Atleast, Exactly

b.

Exactly, Atleast

c.

Atleast, All

d.

All , Exactly

Discuss
Answer: (b).Exactly, Atleast
Q34.
By default, the order by clause lists items in ______ order. 
SELECT name
FROM instructor
WHERE dept name = ’Physics’
ORDER BY name;

a.

Descending

b.

Any

c.

Same

d.

Ascending

Discuss
Answer: (d).Ascending
Q35.
To display the salary from greater to smaller and name in ascending order which of the following options should be used ? 
SELECT *
FROM instructor
ORDER BY salary ____, name ___;

a.

Ascending, Descending

b.

Asc, Desc

c.

Desc, Asc

d.

Descending, Ascending

Discuss
Answer: (c).Desc, Asc
Q36.
This query can be replaced by which of the following ? 
SELECT name
FROM instructor
WHERE salary <= 100000 AND salary >= 90000;

a.

SELECT name
FROM instructor
WHERE salary BETWEEN 90000 AND 100000;

b.

SELECT name
FROM employee
WHERE salary <= 90000 AND salary>=100000;

c.

SELECT name
FROM employee
WHERE salary BETWEEN 90000 AND 100000;

d.

SELECT name
FROM instructor
WHERE salary BETWEEN 100000 AND 90000;

Discuss
Answer: (a).SELECT name
FROM instructor
WHERE salary BETWEEN 90000 AND 100000;
Q37.
This query does which of the following operation? 
SELECT instructor.*
FROM instructor, teaches
WHERE instructor.ID= teaches.ID;

a.

All attributes of instructor and teaches are selected

b.

All attributes of instructor are selected on the given condition

c.

All attributes of teaches are selected on given condition

d.

Only the some attributes from instructed and teaches are selected

Discuss
Answer: (b).All attributes of instructor are selected on the given condition
Q38.
In SQL the spaces at the end of the string are removed by _______ function .

a.

Upper

b.

String

c.

Trim

d.

Lower

Discuss
Answer: (c).Trim
Q39.
_____ operator is used for appending two strings.

a.

&

b.

%

c.

||

d.

_

Discuss
Answer: (c).||
Q40.
The union operation is represented by

a.

∩

b.

U

c.

–

d.

*

Discuss
Answer: (b).U
Page 4 of 17

Suggested Topics

Are you eager to expand your knowledge beyond DBMS? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

Hadoop

Dive into the world of big data with our Hadoop MCQs. Cover key concepts including...

Systems Programming

Decode low-level programming with our Systems Programming MCQs. These questions delve...

MySQL Database

Enhance your knowledge of relational databases with our MySQL MCQs. Understand...

Cloud Computing

Stay on top of the biggest trend in IT with our Cloud Computing MCQs. These questions...

Neural Networks

Dive into the world of Artificial Intelligence with our Neural Networks MCQs. Uncover...

Digital Communication

Master the basics of electronic communication with our Digital Communication MCQs....

Visual Basic

Enhance your knowledge of Microsoft's event-driven programming language with our...

Embedded Systems

Dive into the world of specialized computing systems with our Embedded Systems MCQs....

Human Computer Interaction

Enhance your knowledge of Human-Computer Interaction with our specialized MCQs....