Interview Questions
1. What is an Index?
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of
additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without
having to search every row in a database table every time a database table is accessed. Indexes can be created using one or
more columns of a database table.
Submit an interview question
Submitted questions and answers are subject to review and editing, and may or may not be selected for posting, at the sole discretion of w3Sniff.
Get Started
Comments
Leave a Comment