PostgreSQL is an effective open-source database management system, that has been growing in level of popularity lately as a result of its stability and reliability. It includes lots of advanced features and it may be used to save any kind of content. PostgreSQL could be interfaced with many programming languages, like PHP, Python, Perl, Java, C++, Ruby, and so forth. In addition, it can be used for scalable apps since a single field inside a PostgreSQL database could be up to 1 GB, a table - up to 32 GB, while the database in general doesn't have a limit for its total size. PostgreSQL also works faster than other SQL management systems when complicated operations are executed. Lots of huge companies and institutions have already switched to PostgreSQL for their web sites or products - Apple, Cisco, the US State Department, the University of California, Berkeley, and others.