DataBase Management System › Database Concepts MCQs › Question #13492
MCQ Single Best Answer Easy

QWhat is a query optimizer in a DBMS?

ID: #13492 Database Concepts MCQs 133 views
Question Info
#13492Q ID
EasyDifficulty
Database Concepts MCQsTopic
Start Quiz on This Topic
 Your Answer

Choose the Best Option

Click any option to instantly check if you're correct.

  • A A tool for database design and modeling ✔ ✖
  • B A component for producing graphs and charts ✔ ✖
  • C A mechanism for monitoring database performance ✔ ✖
  • D A module that chooses an efficient query execution plan ✔ ✖
Correct Answer: Option D

Explanation

A query optimizer is a component in a DBMS that is responsible for selecting the most efficient query execution plan for a given query.
It analyzes the query and available data statistics to determine the optimal way to retrieve the requested data.
The goal is to minimize resource usage, such as CPU and disk I/O, and improve query performance.

 Continue Practice
Previous Question Next Question
 Share

Share This Question

Challenge a friend or share with your study group.

 More from This Topic

Related MCQ Questions

What was MICRO Information Management System based on? Which component of a DBMS is responsible for ensuring that the database can be recovered in case of system fai What feature of a DBMS ensures that multiple users can access and modify the database concurrently without con What is the primary function of a database management system (DBMS)? What is the role of terminology in a database design? What is the purpose of transaction management in a DBMS? Which component of a DBMS describes the metadata and provides information about the structure and organization Which approach is commonly used for replicating an entire database? A) Can a customer also be a supplier? Which of the following is an example of a database management system?