Introduction to Indexing
Learn what indexes are in MongoDB and how they improve query performance by quickly locating documents, reducing resource load, and supporting sorting and uniqueness in large datasets.
We'll cover the following...
We'll cover the following...
What is an index?
An index is a data structure that improves the speed and efficiency of data retrieval operations. It acts like a roadmap for the database engine, allowing it to quickly locate documents without scanning the entire collection.
Imagine trying to find a specific topic in a large book. Without an index, we'd need to flip through every page. With an index, we can jump directly to the right page. In MongoDB, indexes function similarly; they store a subset of the data in an optimized format to make lookups faster. ...