/' post-gres-kyu-el/ An enhancement of the POSTGRESdatabase system.PostgreSQL is an advanced {relational database management system} with some {object oriented} approaches.PostgreSQL is developed and distributed as free software, and while retaining its freedom it remains technically and featurewise a worthy competitor to even the most advanced commercial alternatives.It was also one of the first databases to offer MVCC as opposed to row-level locking or table locking, thereby greatly improving multi-user performance.PostgreSQL implements an extended subset of ANSISQL and runs on many platforms.It also has interfaces to many different programming languages and database protocols, like ODBC and JDBC.Start .(1999-09-18)