# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The name of PHP functionality that allows a server to re-write URLs to make them shorter, usually to make them more search engine friendly.
MX record
Acronym for "Mail Exchange" record. Mail exchange records handle the way email is sent via internet mail servers to ensure it arrives at its correct destination (email account).

Hosting providers refer to these records simply as 'Custom MX' records, as customers are allowed to set their own records to handle their email correctly.
The term given to the popular, open-source database management system - commonly used by query driven scripts such as forums, shopping carts and news websites. The system uses "SQL" or "structured query language" to talk to databases and obtain the information it requires from within.