PostgreSQL is an advanced relational database control system, that you can use on numerous platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with various scripting languages (Perl, PHP, Python, Java, Ruby). As it's open-source, it could be effortlessly modified to match the demands of any developer who employs it. PostgreSQL is also one of the most efficient and secure database systems, with superior performance in managing complicated operations compared to similar systems. It is ideal for large-scale applications since a single PostgreSQL database does not have a limit for the size, while a single table may be up to 32 Gigabytes. It is not a surprise that many business, academic and governmental organizations are already employing PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being a few examples.