Have you had experience using indexes in a database at your previous workplace?

Yes, I have experience working with indexes in databases in previous projects. Indexes are used to speed up search and data retrieval operations.

For example, if a table frequently runs queries on a specific field (e.g., user_id), creating an index on this field can significantly reduce query execution time.

In C/C++ projects, I interacted with databases through ORM or directly via SQL queries, considering the need to create and maintain indexes for performance optimization.

Example SQL for creating an index:

CREATE INDEX idx_user_id ON users(user_id);

This helps the database quickly find records by user_id without scanning the entire table.