Web services

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Related to Web services: Amazon Web Services

Web services

[′web ‚serv·ə·səs]
(computer science)
A collection of SML-based standards that enable electronic communication and interaction independently of the computer platforms or specific technologies used by the communication parties.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Web Services

(standard, programming, software)
A family of standards promoted by the W3C for working with other business, developers and programs through open protocols, languages and APIs, including XML, Simple Object Access Protocol, WSDL and UDDI.

W3C Web Services.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

Web services

(1) A Web service may refer to any capability delivered from a website. Since there are countless applications and services that emanate from the Web, such usage of the term is commonplace in articles from non-IT publications. Although the term may also appear in technical journals to refer to any offering on the Web, the astute journalist avoids such usage because "Web services" has a very specific definition (see definition #3).

(2) Amazon's cloud-based offerings are provided by the Amazon Web Services subsidiary. See Amazon Web Services.

(3) Another example of generic names coined for specific technologies (see naming fiascos), Web services also refers to an interface for a service oriented architecture, in which Web-based applications dynamically interact with each other using open standards that include XML, HTTP, UDDI and SOAP. Such applications typically run behind the scenes, one program "talking to" another, server to server or client to server. See service-oriented architecture.

Services are registered on the Internet so that applications can search for, find and seamlessly exchange data. Both desktop and mobile devices can use them, and if the service is fee based, payment processing is included. For mobile Web services protocols, see DPWS.

Private Implementations
Web services are also used when large enterprises need to exchange data with their divisions, subsidiaries or clients. In such controlled situations, the data being passed are easily defined. In addition, since Web services use open standards, vendors can supply customers with client-side software no matter what the platform.

In the past, the Web services style of architecture was occasionally realized within private networks using the industry standard CORBA and Microsoft's DCOM distributed component platforms. See CORBA and DCOM.

It's Just a Protocol
Web services define the format, transport and interface standards, not the meaning of the data exchanged. Before any Web service can be put into operation, there must be industry agreement on the vocabulary and functions each service component must provide (see ebXML). See Web services protocols and XML.

Web Services Protocol Stack
UDDI is used to register and discover the service described in the Web Services Description Language (WSDL). UDDI transactions use SOAP to talk to the UDDI server, and the application uses SOAP to request the service. SOAP messages are delivered by HTTP over TCP/IP. See SOAP, UDDI, HTTP and TCP/IP.
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References in periodicals archive ?
'Ranking and Clustering Web Services Using Multicriteria Dominance Relationships', IEEE Transactions on Services Computing, 3(3): 163-177.
'Rule-Based Semi Automatic Web Services Composition', IEEE Congress on Services, pp: 805-812.
In SOA, applications often need to access web services in remote environment.
The network over which web services are invoked is restricted by the network bandwidth.
It takes a lot of hard study for a programmer in order to develop proper Web Services.
Web Services are the next step in Internet Technology that offers to customers safe, scalable and reusable methods in order to develop their online business.
For the latter, the model broker outputs include the workflow schemes described with the service chains, the associated Web services, and the workflow descriptions.
Integrating Models as Web Services. The aim of this experiment is to show the models' integration using the Web services.
Section 2 of this paper discusses related work of WSNs, service-oriented WSNs, and web services. Section 3 describes the web service integration problem and the proposed integration system architecture.
Figure 1 shows the common web service model with the ability of exception handling, which adds an exception management module to the existing web service model.

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