What are the advantages and disadvantages of using indexes in databases?

Advantages of using indexes in databases:

• Significantly accelerate search and data retrieval operations.
• Improve the performance of queries with WHERE, JOIN, ORDER BY conditions.
• Help quickly find records by keys.

Disadvantages:

• Indexes occupy additional disk space.
• Slow down insert, update, and delete operations, as the index needs to be updated.
• Too many indexes can degrade overall performance.

Therefore, it is important to balance the number and types of indexes based on the nature of the load and queries.