PostgreSQL is a high level relational database administration system, that you can use on numerous platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with many scripting languages (Perl, PHP, Python, Java, Ruby). Due to the fact that it is open-source, it could be easily modified to suit the requirements of any developer who uses it. PostgreSQL is also one of the most dependable and stable database systems, with superior functionality in handling sophisticated operations compared with similar systems. It's appropriate for large-scale apps since a single PostgreSQL database does not have a limit for the size, while a single table can be up to 32 GB. It's not a surprise that many business, academic and governmental entities are already using PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being just a couple of examples.