The Databases section allows you to create MySQL and PostgreSQL databases and users, to modify databases and access to them. SQL stands for Structured Query Language. SQL is an international standard in querying and retrieving information from databases. PostgreSQL is an object-relational database management system. MySQL is essentially an SQL server - it responds to requests for information that are written in SQL. You can communicate with MySQL using a wide variety of programming languages (PHP being one of the most common). MySQL is Open Source software and free for use.