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QWhat is the purpose of the INDEX in a MySQL database?

ID: #15419 Introduction to MySQL Databases 99 views
Question Info
#15419Q ID
EasyDifficulty
Introduction to MySQL DatabasesTopic
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  • A To define a primary key for a table ✔ ✖
  • B To ensure data integrity ✔ ✖
  • C To optimize query performance ✔ ✖
  • D To enforce referential integrity ✔ ✖
Correct Answer: Option C

Explanation

In MySQL, an INDEX is used to optimize the performance of queries by creating a data structure that allows for faster data retrieval. It helps in speeding up the search, sorting, and joining of tables.

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