query optimizer concepts - Wikitechy https://www.wikitechy.com/interview-questions/tag/query-optimizer-concepts/ Interview Questions Wed, 26 Oct 2022 07:14:23 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png query optimizer concepts - Wikitechy https://www.wikitechy.com/interview-questions/tag/query-optimizer-concepts/ 32 32 What do you understand by Query Optimization ? https://www.wikitechy.com/interview-questions/dbms/what-do-you-understand-by-query-optimization/ https://www.wikitechy.com/interview-questions/dbms/what-do-you-understand-by-query-optimization/#respond Wed, 26 Oct 2022 07:14:23 +0000 https://www.wikitechy.com/interview-questions/?p=5023
  • It is a phase which identifies a plan for evaluation query that has the least estimated cost.
  • We can use query optimizer when there is lot of algorithms and methods to execute the same task.

    • Advantages

    • Query optimizer provides faster output.
    • It takes less time to execute large number of queries.
    • It also reduces time and space complexity.
    ]]>     https://www.wikitechy.com/interview-questions/dbms/what-do-you-understand-by-query-optimization/feed/ 0