SQL Stands for Structured query language. The language used to create SQL queries to access and manipulate databases. Includes DDL (data-definition language that manages table and index structure) and DML (data manipulation lan- guage, the subset of SQL used to add, update and delete data).
Super user The highest user level in Joomla. Members of this group have super user permissions throughout the site. If anything can be done in a Joomla installation, the super user can do it.
Controller One of the elements of model-view-controller (MVC) design pattern used for Joomla core components. The controller executes tasks that are being requested by the client or the system. The base API class we use for a controller is called JController.
