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Welcome to the Advanced SQL MCQs Page

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

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

Advanced SQL MCQs | Page 3 of 8

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Q21.
What is the function of the not null constraint?

a.

It prevents illegal data from being entered into the database

b.

It ensures that data is entered into the database

c.

It ensures that the data entered is unique

d.

None of the mentioned

Discuss
Answer: (b).It ensures that data is entered into the database
Q22.
What is the function of the unique constraint?

a.

It ensures that no two values under an attribute are identical

b.

It ensures that all the attributes are perfectly unique in their data type

c.

It ensures that all the relations in the database have a unique set of attributes

d.

It does not have any function in SQL

Discuss
Answer: (a).It ensures that no two values under an attribute are identical
Q23.
What is the functions of on delete cascade?

a.

It is used to delete a tuple in a table

b.

It is used to specify the precise attribute that needs to be deleted in a single relation.

c.

It is used to preserve referential integrity in a relation

d.

It is used to execute sub-queries in the from clause.

Discuss
Answer: (c).It is used to preserve referential integrity in a relation
Q24.
What does the following condition do?
check( name in( ‘Ryan’, ‘Cristiano’, ‘Leo’))

a.

The condition checks whether the name attribute includes the three mentioned names

b.

The condition allows the name attribute to possess only the three mentioned names

c.

The condition checks whether the given names are sub-strings in at least one of the values

d.

None of the mentioned

Discuss
Answer: (b).The condition allows the name attribute to possess only the three mentioned names
Q25.
Referential integrity constraints are also called as _________

a.

Functional dependencies

b.

Subset dependencies

c.

Superset dependencies

d.

Primary dependencies

Discuss
Answer: (b).Subset dependencies
Q26.
________ is a predicate that we expect the database to always satisfy

a.

Assertion

b.

Reason

c.

Mandate

d.

Verify

Discuss
Answer: (a).Assertion
Q27.
State true or false: Oracle does not support complex check conditions

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (a).True
Q28.
What statement is used to define a new assertion in SQL?

a.

create check
;

b.

create assertion where
;

c.

create where
;

d.

create assertion check
;

Discuss
Answer: (d).create assertion check
;
Q29.
Which of the following is not a valid Date and Time data type?

a.

date

b.

time

c.

datestamp

d.

timestamp

Discuss
Answer: (c).datestamp
Q30.
What is a timestamp?

a.

A combination of date and time with date first

b.

A combination of date and time with time first

c.

A combination of time and place with time first

d.

A combination of time and place with place first

Discuss
Answer: (a).A combination of date and time with date first
Page 3 of 8

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