What happens when you create too many indexes on a database table?

When you create too many indexes on a database table, it can lead to decreased performance. While indexes can improve query performance by speeding up data retrieval, they also come with overhead in terms of storage space and maintenance. Having too many indexes can result in slower data modification operations, such as inserts, updates, and deletes, as the database engine needs to maintain all the indexes whenever data changes. Additionally, excessive indexes can lead to increased disk I/O and memory usage, which can degrade overall system performance. Therefore, it's important to strike a balance between the benefits of indexing and the overhead it introduces, and only create indexes that are necessary for optimizing query performance.