MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The number of indexes on a table is the most dominant factor for insert performance. The more indexes a table has, the slower the execution becomes.

Detailed explanation-2: -What is true about indexes? Explanation: Indexes tend to improve the performance. Take Database Management System Mock Tests-Chapterwise!

Detailed explanation-3: -Indexes support the efficient execution of queries in MongoDB. Without indexes, MongoDB must perform a collection scan, i.e. scan every document in a collection, to select those documents that match the query statement.

Detailed explanation-4: -Indexing makes columns faster to query by creating pointers to where data is stored within a database. Imagine you want to find a piece of information that is within a large database. To get this information out of the database the computer will look through every row until it finds it.