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Welcome to the Data Storage and Querying MCQs Page

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

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Check out the MCQs below to embark on an enriching journey through Data Storage and Querying. 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 Data Storage and Querying. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Storage and Querying MCQs | Page 19 of 21

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Q181.
You have a column that will only contain values from 0 to 256. What is the most economical data type to use for the column?

a.

TINYINT

b.

SMALLINT

c.

INT

d.

DECIMAL(1)

Discuss
Answer: (b).SMALLINT
Q182.
Problems occurs if we don’t implement proper locking strategy

a.

Dirty reads

b.

Phantom reads

c.

Lost updates

d.

Unrepeatable reads

Discuss
Answer: (b).Phantom reads
Q183.
Which of the following fixed database roles can add or remove user IDs?

a.

db_accessadmin

b.

db_securityadmin

c.

db_setupadmin

d.

db_sysadmin

Discuss
Answer: (a).db_accessadmin
Q184.
By default sql server has ___________ isolation level

a.

READ COMMITTED

b.

READ UNCOMMITTED

c.

SERIALIZABLE

d.

REPEATABLE READ

Discuss
Answer: (a).READ COMMITTED
Q185.
Which feature converts row data to column for better analytical view?

a.

Views

b.

Join

c.

Pivot

d.

Trigger

Discuss
Answer: (c).Pivot
Q186.
Which of the following statements is/are not true for SQL profiler?

a.

Enables you to monitor events

b.

Check if rows are being inserted properly

c.

Check the performance of a stored procedure

d.

None of the mentioned

Discuss
Answer: (c).Check the performance of a stored procedure
Q187.
Which global variables can be used to determine if a transaction is still open?

a.

@@NESTLEVEL

b.

@@FETCH_STATUS

c.

@@TRANCOUNT

d.

@@CONNECTIONS

Discuss
Answer: (c).@@TRANCOUNT
Q188.
Which statement is used to define a cursor?

a.

OPEN

b.

FETCH

c.

DECLARE CURSOR

d.

@@FETCH_STATUS

Discuss
Answer: (c).DECLARE CURSOR
Q189.
What is the default “SORT” order for a SQL?

a.

Ascending

b.

Descending

c.

As specified by the user

d.

None of the mentioned

Discuss
Answer: (a).Ascending
Q190.
Capabilities of RAISERROR

a.

It can be logged in the error log

b.

It can print a message to the application

c.

It can assign an error number, state and severity

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Page 19 of 21

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