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Welcome to the Query Optimization MCQs Page

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

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Check out the MCQs below to embark on an enriching journey through Query Optimization. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MySQL Database.

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

Query Optimization MCQs | Page 8 of 9

Q71.
Which compiler is used to execute the structured query language?
Discuss
Answer: (c).DML
Q72.
Which among the following tags belong to Data definition language?
Discuss
Answer: (d).All of the mentioned
Q73.
Which among the following tags belong to Data Manipulation language?
Discuss
Answer: (d).All of the mentioned
Discuss
Answer: (d).All of the mentioned
Discuss
Answer: (a).Determine the efficient way to execute a query
Q76.
What is the meaning of “EMPTY SET” in the following MySQL command?
SELECT fname, lname, person_id
FROM person
WHERE lname=’s’;
/* after Execution*/ Mysql tool RETURN EMPTY SET 0:00sec
Discuss
Answer: (a).No values
Q77.
Which are the two languages used in Mysql?
Discuss
Answer: (a).DML/DDL
Q78.
The users responsible for query processing in database system are ___________
Discuss
Answer: (c).Sophisticated users
Discuss
Answer: (a).Authentication-> DDL->DML->query optimizer->output
Q80.
Which clause is used to determine “which column to include in the query sets”?
Discuss
Answer: (a).SELECT
Page 8 of 9

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