The process of capturing changes made at the data source and applying them throughout the enterprise. CDC minimizes the resources required for ETL (extract, transform, load) processes because it only deals with data changes.

A systematic approach to dealing with change, both from the perspective of an organization and on the individual level. It has least three different aspects, including: adapting to change, controlling change, and effecting change. 

A formal proposal for an alteration to some product or system. In project management, a change request often arises when the client wants an addition or alteration to the agreed-upon deliverables for a project. 

In computer and Internet marketing, a channel is a "middleman" between a product creator and the marketplace. Value-added resellers (VAR) and retail store chains are examples of channels in this context.

In IBM mainframe systems, a channel is a high bandwidth connection between a processor and other processors, workstations, printers, and storage devices within a relatively close proximity.

In optical fiber transmission using dense wavelength-division multiplexing (DWDM), a channel is a separate wavelength of light within a combined, multiplexed light stream.

  One of multiple transmission paths within a single link between network points. For example, the commonly used (in North America) T-carrier system line service provides 24 64 Kbps channels for digital data transmission. 

A signaling (for example, in a T-carrier system line) in which control signals, such as those for synchronizing and bounding frames, are carried in the same channels as voice and data signals.

A device at a telephone company central office (public exchange) that converts analog signals from home and business users into digital signals to be carried over higher-speed lines between the central office and other exchanges. 

A cluster of nodes connected in a network topology with multiple interfaces and redundant storage. RAIN is used to increase fault tolerance. It is an implementation of RAID across nodes instead of across disk arrays.

A file format from Microsoft that lets you create a file that defines a Web "channel," which is a preselected Web site or group of related Web sites. To use the channel, a user needs to have the Microsoft Internet Explorer 4 or later browser. 

A device used with IBM's S/390 line of computers to increase the maximum communication distances between the S/390 channel-connected mainframe computers, or between an S/390 and peripheral devices.

Software that helps track the effectiveness of sales through multiple channels and capture data necessary for decision making.

A hardware device about the size of an external modem that converts a digital data frame from the communications technology used on a local area network (LAN) into a frame appropriate to a wide-area network (WAN) and vice versa. 

A signaling (for example, in a T-carrier system line) in which control signals, such as those for synchronizing and bounding frames, are carried in the same channels as voice and data signals.

A digital carrier modulation method where a T1 line is divided into 24 channels, each having a maximum data speed of 64,000 bits/sec, and is capable of supporting application that can run concurrently but independently of others on different channels.