PostgreSQL is an innovative relational database management system, that you can use on a number of platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with many scripting languages (Perl, PHP, Python, Java, Ruby). Because it is open-source, it can be freely modified to suit the requirements of any developer who uses it. PostgreSQL is also amongst the the most dependable and stable database systems, with far better efficiency in managing complicated operations when compared with similar systems. It's suitable for large-scale apps because a single PostgreSQL database doesn't have a limit for the size, while one table could be up to 32 GB. It's not a surprise that a number of 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 couple of examples.