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 2 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

Q11.

We can test for the nonexistence of tuples in a subquery by using the _____ construct.

Not exist

Not exists

Exists

Exist

Discuss

Answer: (b).Not exists

Q12.

Dates must be specified in the format

mm/dd/yy

yyyy/mm/dd

dd/mm/yy

yy/dd/mm

Discuss

Answer: (b).yyyy/mm/dd

Q13.

An ________ on an attribute of a relation is a data structure that allows the database system to find those tuples in the relation that have a specified value for that attribute efficiently, without scanning through all the tuples of the relation.

Index

Reference

Assertion

Timestamp

Discuss

Answer: (a).Index

Q14.

Which of the following is used to store movie and image files ?

Clob

Blob

Dlob

None of the above

Discuss

Answer: (b).Blob

Q15.

The user defined data type can be created using

Create datatype

Create data

Create definetype

Create type

Discuss

Answer: (d).Create type

Q16.

Values of one type can be converted to another domain using which of the following ?

Cast

Drop type

Alter type

Convert

Discuss

Answer: (a).Cast

Q17.

Which of the following closely resembles Create view ?

Create table . . .like

Create table . . . as

With data

Create view as

Discuss

Answer: (b).Create table . . . as

Q18.

In contemporary databases the top level of the hierarchy consists of ______, each of which can contain _____.

Catalogs, schemas

Schemas, catalogs

Environment, schemas

Schemas, Environment

Discuss

Answer: (a).Catalogs, schemas

Q19.

Which of the following statements creates a new table temp instructor that has the same schema as instructor.

create table temp_instructor;

Create table temp_instructor like instructor;

Create Table as temp_instructor;

Create table like temp_instructor;

Discuss

Answer: (b).Create table temp_instructor like instructor;

Q20.

The____condition allows a general predicate over the relations being joined.

Using

Set

Where

Discuss

Answer: (a).On

Page 2 of 38

Welcome to the SQL MCQs Page

SQL MCQs | Page 2 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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