<p>PostgreSQL is a powerful, open source object-relational database system running on all major platforms. Support for native programming interfaces for C/C++, Java, .Net, Perl, Python, Ruby, Tcl and ODBC among others.</p><p>Features: </p><p>fully ACID compliant</p><p>full support for foreign keys, joins, views, triggers, and stored procedures (in multiple languages)</p><p>includes most SQL 2008 data types, including INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP</p><p>supports storage of binary large objects, including pictures, sounds, or video</p><p>multi-Version Concurrency Control (MVCC)</p><p>Highly customisable</p>