PostgreSQL is a powerful open-source database management system, which has been growing in popularity lately on account of its stability and dependability. It provides a lot of innovative functions and it could be used to save any type of info. PostgreSQL could be interfaced with numerous programming languages, like PHP, Python, Perl, Java, C++, Ruby, etc. In addition, it can be used for scalable applications because a single field in a PostgreSQL database can be up to 1 Gigabyte, a table - up to 32 GB, while the database in general does not have a limit for its total size. PostgreSQL also performs more quickly than other SQL management systems when complicated operations are performed. Many huge businesses and institutions have already migrated to PostgreSQL for their Internet sites or products - Apple, Cisco, the US State Department, the University of California, Berkeley, and many others.