PostgreSQL is an open source relational database system, with more than 15 years of active development. PostgreSQL is fully ACID compliant, has full support for foreign keys, joins, views, triggers, and stored procedures (in multiple languages). It includes most SQL92 and SQL99 data types, including INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP.
What's new in this version:
Version 9.2.3 has added new timezone abbreviation FET and fixed intermittent crash in DROP INDEX CONCURRENTLY.