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PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS). It is released under an MIT-style license and is thus free and open source software. As with many other open source programs, PostgreSQL is not controlled by any single company, but has a global community of developers and companies to develop it.

The PostgreSQL Project today released minor versions updating all active branches of the PostgreSQL object-relational database system, including versions 8.4.2, 8.3.9, 8.2.15, 8.1.19, 8.0.23, and 7.4.27. This release fixes one moderate-risk and one low-risk security issue: an SSL authentication issue, and a privilege escalation issue with expression indexes. All PostgreSQL database administrators are urged to update your version of PostgreSQL at the earliest opportunity.

There are also 48 other bug fixes in this release, many of which apply only to version 8.4, and a few of which are specifically for Windows. While these are generally fixes for minor issues, among the changes are:

• Prevent hash index corruption
• Update time zone data for 9 regions
• Fix permissions-related startup issue on Windows
• Prevent server restart if a VACUUM FULL is killed
• Correct cache initialization startup bug

The  Download  instructions  are   here  :

http://www.postgresql.org/download/

source  :   wikiPEDIA.ORG  /  POSTRESQL.ORG

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