What is SQL database optimization?

SQL database optimization refers to the process of improving the performance and efficiency of a SQL database. This involves analyzing and tuning queries, indexing, database schema design, and server configuration to reduce response times and resource usage. Optimization helps ensure that the database can handle large amounts of data and concurrent users without slowing down. Techniques may include rewriting queries, adding or adjusting indexes, partitioning tables, and optimizing server hardware or settings.