client-server


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client-server

(programming)
A common form of distributed system in which software is split between server tasks and client tasks. A client sends requests to a server, according to some protocol, asking for information or action, and the server responds.

This is analogous to a customer (client) who sends an order (request) on an order form to a supplier (server) who despatches the goods and an invoice (response). The order form and invoice are part of the "protocol" used to communicate in this case.

There may be either one centralised server or several distributed ones. This model allows clients and servers to be placed independently on nodes in a network, possibly on different hardware and operating systems appropriate to their function, e.g. fast server/cheap client.

Examples are the name-server/name-resolver relationship in DNS, the file-server/file-client relationship in NFS and the screen server/client application split in the X Window System.

Usenet newsgroup: news:comp.client-server.

["The Essential Client/Server Survival Guide", 2nd edition, 1996].
References in periodicals archive ?
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With the advent of the Internet and an explosion of networked centralized servers, some thought systems nirvana was at hand: If we can serve up billions of HTML (hypertext markup language) Web pages on the Internet, let's do the same for our client-server applications and get rid of the vexing "footprint" of client software on local PCs.
For the modules available on WebLIDB, reports are processed faster than on the client-server version.
FIN is client-server based and can communicate with all major PLCs.
Over the past five years, the client-server model has been in steady decline.
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The result of these new developments is that the supposed division between legacy client-server applications and Web apps is softening.

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