PostgreSQL is a high level relational database control system, that you can use on a variety of platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with many different scripting languages (Perl, PHP, Python, Java, Ruby). Since it's open-source, it can be easily modified to match the demands of any developer who works with it. PostgreSQL is also amongst the the most reliable and secure database systems, with significantly better performance in managing complex procedures in comparison with similar systems. It's ideal for large-scale apps as a single PostgreSQL database doesn't have a limit for the size, while a single table may be up to 32 GB. It isn't a surprise that many business, academic and government organizations are already working with PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being just a few examples.