PostgreSQL is an advanced relational database administration system, which can be used on many different platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with a number of scripting languages (Perl, PHP, Python, Java, Ruby). As it is open-source, it may be effortlessly modified to fit the needs of any developer who works with it. PostgreSQL is also one of the most trusted and stable database systems, with better functionality in managing complex procedures when compared with similar systems. It is suitable for large-scale applications as a single PostgreSQL database does not have a limit for the size, while an individual table could be up to 32 GB. It's not surprising that a number of business, academic and governmental organizations are already using PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being just a few examples.