PostgreSQL is an advanced relational database administration system, which can be used on a number of platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with many different scripting languages (Perl, PHP, Python, Java, Ruby). As it's open-source, it could be easily modified to fit the requirements of any developer who works with it. PostgreSQL is also among the most trusted and secure database systems, with better performance in handling complex operations compared to similar systems. It's well suited for large-scale apps as a single PostgreSQL database does not have a limit for the size, while a single table may be up to 32 Gigabytes. It isn't a surprise that a lot of business, academic and government organizations are already using PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being just a couple of examples.