PostgreSQL is a high level relational database management system, that you can use on a variety of platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with many scripting languages (Perl, PHP, Python, Java, Ruby). Because it's open-source, it may be easily modified to fit the demands of any developer who employs it. PostgreSQL is also one of the most trusted and stable database systems, with superior performance in handling complicated operations compared with similar systems. It is ideal for large-scale applications since a single PostgreSQL database does not have a limit for the size, while one table may be up to 32 GB. It's not surprising that a number of business, academic and government organizations are already employing PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being just a few examples.