Template Style Template style is a feature introduced in Joomla 2.5 that allows users to assign different template styles to individual menu items. By default, Joomla! assigns a template style to all menu items upon installation. A yellow star indicates the default template style in use. A default template style can be partially or completely overridden by assigning different template styles to the desired menu items in order to obtain a different look for their respective pages. A template style can be assigned to menu items one of two ways. Template manager Extensions ? Template Manager Editing a menu item under Menus ? Menu Name ? Menu item Reference: http://docs.joomla.org/Glossary
Sub category A collection of related articles. Sub-categories start at one organiza- tional level below categories. Since Joomla 1.6, you may have as many levels of sub-categories as you please (called nested categories).
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).