R

RAID

See also Redundant Array of Independent (or Inexpensive) Disks (RAID).

RDO

See also Remote Data Objects (RDO).

Recordset

The result of a query on one or more tables of a database. A recordset contains a single result set consisting of a single table. The recordset relies on a connection with the DBMS in order to perform data exchange and update.

Redundant Array of Independent (or Inexpensive) Disks (RAID)

A set of interconnected drives that reside outside the server in many cases, but are connected to the server through cabling. Workstation RAID setups tend to reside in the workstation cabinet. There are several levels of RAID. Each level defines precisely how the data is placed on each of the drives. In all cases, all the drives in a group share responsibility for storing the data. They act in parallel to both read and write the data. In addition, there is a special drive in most of these systems devoted to helping the network recover when one drive fails. In most cases the user never even knows that anything happened , the "spare drive" takes over for the failed drive without any noticeable degradation in network operation. RAID systems increase network reliability and throughput.

Regression Search

A search in which the user or search engine begins with the result data and looks for the information used to create the results. For example, the search could begin with the word salt and end up with pages that describe the interaction of sodium and chloride.

Remote Data Objects (RDO)

An older Microsoft database technology that provides access to remote data using a set of Component Object Model (COM) objects similar to those found in technologies such as Data Access Objects (DAO) and Open DataBase Connectivity (ODBC). This technology relies on database providers to support multiple database products.

Remote Procedure Call (RPC)

One of several methods for accessing data within another application. RPC is designed to look for the application first on the local workstation, and then across the network at the applications stored on other workstations.

REpresentational State Transfer (REST)

A technique for passing data to a Web service using one or more arguments as part of an URL. Each argument represents an XML node that the client would normally pass as an XML document. This technique is also known as XML-over-HTTP. The input to the Web server is a standard URL with arguments, while the output is an XML document. Some developers use this technique to reduce the coding required to obtain Web service output on less capable devices or on Web sites.

REST

See also REpresentational State Transfer (REST).

Rich Site Summary (RSS)

A technology that enables a content creator to register content with a publisher using specially formatted eXtensible Markup Language (XML) data. Subscribers access the content through the publisher. Content creators use this technology, originally developed by Netscape, to output information such as news feeds, product announcements, events, and other items of general or specific interest. Also known as Resource Description Framework (RDF) Site Summary.

RPC

See also Remote Procedure Call (RPC).

RSS

See also Rich Site Summary (RSS).