Data Integrity

The degree or means by which the data in a database conform to specified data standards. For example, to maintain integrity, the numeric fields in a database will not accept alphabetic data.

Data Integration

The process of combining or linking two or more data sets from various sources to facilitate data sharing, promote effective data gathering and communication, and support overall information management activities in an organization (see also data warehouse and interoperable database).

Data Exchange Format (DXF)

A proprietary but published two-dimensional graphics file format supported by virtually all PC-based computer-aided design (CAD) products. It is now a de facto standard for exchanging graphics data.

Client/Server Architecture

A computer network architecture in which each computer or process on the network is either a client or a server. “Servers” are powerful computers or processes dedicated to managing disk drives (file servers), printers (print servers), or network traffic (network servers). “Clients” are personal computers or workstations on which users run applications. Clients rely on… Continue reading Client/Server Architecture

Computer Network Architecture

Structural design that defines a computer network’s general characteristics as well as its precise mechanisms. In broad terms, a computer network can have open or closed architecture. Open architectures allow the system to be connected easily to devices and programs made by other manufacturers. Open architectures use off-the-shelf components and conform to approved standards (see… Continue reading Computer Network Architecture

Wide Area Network (WAN)

A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more LANs. Computers connected to a WAN are often connected through public networks such as the telephone system. They can also be connected through leased lines or satellites. The largest WAN in existence is the Internet.

Local Area Network (LAN)

A computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings, and connect workstations and personal computers. Each individual computer or node in a LAN has its own central processing unit with which it executes programs, but it is also able to access shared data… Continue reading Local Area Network (LAN)