Description: The indexing strategy is a methodical plan for creating and maintaining indexes that optimize data retrieval in databases. An index is a data structure that improves the speed of query operations on a table at the cost of increased space usage and time in write operations. Indexing allows databases to search for and retrieve information more efficiently, which is crucial in environments handling large volumes of data. There are different types of indexes, such as unique, composite, and full-text indexes, each designed to meet specific query needs. Choosing an appropriate indexing strategy can significantly influence the overall performance of the database, affecting both query speed and system load. In NoSQL systems, indexing adapts to the unstructured nature of data, while in relational databases, more traditional indexes are used. SQL query optimization also benefits from a well-designed indexing strategy, allowing developers and database administrators to improve the efficiency of their applications and information systems.