MySQL™ The definitive guide to using, programming, and administering MySQL 4.1 and 5.0 Third Edition[@more@]If you're looking for a free or low-cost database management system, several are available from which to choose: MySQL, PostgreSQL, SQLite, one of the free-but-unsupported engines from commercial vendors, and so forth. When you compare MySQL with other database systems, think about what's most important to you. Performance, support, features (such as SQL conformance or extensions), licensing conditions and restrictions, and price all are factors to take into account.