Glossary - R

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RAID	Also known as a Redundant Array of Inexpensive Drives, is a data storage scheme using two or more drives to together for fault tolerance or performance reasons. RAID disk drives are typically used on servers but aren't generally necessary for personal computers. Click here for more info on specific RAID levels.
RAM	Also known as Random Access Memory, is the volatile memory used to temporarily store data/info for processing. This is the fastest type of memory for the computer, and is also the most expensive. There are several types of RAM.
RDBMS	Or Relational Data Base Management System, is a database management systems which maintains data records and indices in tables. Relationships can be created and maintained across the data and tables.
Recursion	The use of a routine to repeat one or more actions. A recursive routine contains a call to itself in the body of the routine .
Redundant	Redundant pertiains to computer or network system components, such as fans, hard disk drives, servers, etc which are installed to back up primary resources in case they fail.
Registry	When referring to Windows Operating Systems, the registry is a database of information which stores all of the setup, user preferences, software and hardware configuration information. You can access the registry by clicking on the Start menu and then typing regedit in the run box, then Enter.
Remote Desktop	Included with newer MS Operating Systems, enables you to connect to a computer across the Internet or LAN and gives you mouse and keyboard control over it.
Removable Storage	A device used to store information on disks/flash that can be removed and used on different systems.