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 different scripting languages (Perl, PHP, Python, Java, Ruby). Since it's open-source, it could be easily modified to match the demands of any developer who uses it. PostgreSQL is also among the most trusted and secure database systems, with significantly better functionality in handling complex operations compared to similar systems. It's ideal for large-scale apps since a single PostgreSQL database does not have a limit for the size, while one table could be up to 32 GB. It isn't surprising that a number of business, educational and governmental entities are already using PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being just a few examples.