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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 3 of 9

Q21.
Calculations involving numbers are faster than those involving string.
Discuss
Answer: (a).True
Q22.
To convert an int to string, the function is _________________
Discuss
Answer: (b).INET_NTOA()
Q23.
To convert a string to an int, the function is _________________
Discuss
Answer: (a).INET_ATON()
Q24.
To maintain performance of tables having variable length rows, which statement is used?
Discuss
Answer: (d).OPTIMIZE TABLE
Q25.
Which of these columns are faster?

Variable length, Fixed length
Discuss
Answer: (c).fixed length
Q26.
Which of these take more space?

Variable length columns, Fixed length columns
Discuss
Answer: (c).fixed length
Q27.
To minimize disk I/O, which of these should be chosen?

CHAR, VARCHAR
Discuss
Answer: (b).VARCHAR
Q28.
Avoiding NULL in columns may make queries simpler.
Discuss
Answer: (a).True
Q29.
Which of these can be used to generate hash values?
Discuss
Answer: (d).MD5()
Discuss
Answer: (a).both integers and a string
Page 3 of 9

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