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Welcome to the Data Modification and Constraints MCQs Page

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

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Check out the MCQs below to embark on an enriching journey through Data Modification and Constraints. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of SQL Server.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Data Modification and Constraints. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Modification and Constraints MCQs | Page 2 of 6

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Q11.
Which of the following is not a ranking function?

a.

RANK

b.

NTILE

c.

ROW_NUMBER

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q12.
Point out the wrong statement.

a.

The ROW_NUMBER function simply assigns sequential numbering to the records of a result-set or to the records within groups of a result-set

b.

OVER clause is not required in all the ranking functions

c.

SQL Server introduced four different ranking functions

d.

All of the mentioned

Discuss
Answer: (b).OVER clause is not required in all the ranking functions
Q13.
Which of the following is the simplest ranking function?

a.

RANK

b.

NTILE

c.

ROW_NUMBER

d.

None of the mentioned

Discuss
Answer: (c).ROW_NUMBER
Q14.
Which of the clause is not mandatory?

a.

OVER clause

b.

ORDER BY clause

c.

PARTITION BY clause

d.

All of the mentioned

Discuss
Answer: (c).PARTITION BY clause
Q15.
Point out the wrong statement.

a.

RANK() returns the rank of each row in the result set of partitioned column

b.

DENSE_RANK() is same as RANK() function. Only difference is returns rank without gaps

c.

NTILE() distributes the columns in an ordered partition into a specified number of groups

d.

ROW_NUMBER() returns the serial number of the row order by specified column

Discuss
Answer: (c).NTILE() distributes the columns in an ordered partition into a specified number of groups
Q16.
Which of the function provides consecutive numbering except in the case of a tie?

a.

RANK

b.

NTILE

c.

ROW_NUMBER

d.

None of the mentioned

Discuss
Answer: (a).RANK
Q17.
Which of the following will not raise error if not used?

a.

OVER clause

b.

ORDER BY clause

c.

PARTITION BY clause

d.

All of the mentioned

Discuss
Answer: (c).PARTITION BY clause
Q18.
Which of the following error message will be displayed if ORDER CLAUSE is not mentioned in ROW NUMBER function?

a.

“The ranking function “ROW_NUMBER” must have an ORDER BY clause.”

b.

“The ranking function “ROW_NUMBER” must have an OVER BY clause.”

c.

“The ranking function “ROW_NUMBER” must have an PARTITION BY clause.”

d.

All of the mentioned

Discuss
Answer: (a).“The ranking function “ROW_NUMBER” must have an ORDER BY clause.”
Q19.
Which of the following functions are similar?

a.

RANK and NTILE

b.

RANK and DENSE_RANK

c.

DENSE_RANK and NTILE

d.

None of the mentioned

Discuss
Answer: (b).RANK and DENSE_RANK
Q20.
Which of the following function is used when you want all tied rows to have the same ranking?

a.

RANK

b.

NTILE

c.

ROW_NUMBER

d.

None of the mentioned

Discuss
Answer: (a).RANK
Page 2 of 6

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