Web service

08.25 Posted In , , Edit This 0 Comments »
Web service Is a applications that can expose an API that can be accessed through the web. This means you can call the application via the web, and the applications that call is called a client. This is possible because the standard web service to allow clients and servers communicate via HTTP with the platform or programming language that is different.

Web Services Platform specification requires a minimum feature to be able to build applications are. Platforms have any exact format of a representation of data and system data type. To be able to interact, the Web Services Platform should provide a standard system of the type of data system to bridge differences in the type of data that exist in various platforms, programming languages and the different components of modeling different. Web Service Platform must also provide information about the description of the interface, functions, and parameters for the needs of the client in the service call. Finally, the Web Service must also provide a mechanism for calling the web service in the remote, this protocol must be independent of platforms and programming languages.

Technology that makes Web Service Platform is realized between the XML (Extensible Markup Language) and XSD (Xml Schema Definition Language) format that provides the basis for the representation of data. And SOAP (Simple Object Acess Protocol), which provides a standard mechanism for the Remote Procedure Call calling Web Services. Then also WSDL (Web Services Description Language) is a grammar to explain the functions and parameters of the web service in XML format. WSDL as one of the supporting technology interoperability Specifically we will discuss how to create a WSDL that supports the interoperability of an application. WSDL (Web Services Description Language) is an XML grammar to describe the web service interface, the protocol be the web service and location. WSDL Version 1.1 specifications made by IBM and Microsoft Research. Although not a WSDL or the W3C standards that must make the call and a web service, but supported the implementation of the various SOAP client and development tools.

Web Service fully web-based standards and xml. Web Service can help:
• The integration of the platform along the virtual machine execution.
• Integration between the Web and OO middleware.
• Integration isolated from the flow of work and sevice-service (Web Services Flow Language - WSFL).
• Exchange of data on the application of different (X-Schema, XSLT)
• (future: the standardization of information between the context of web services and client - horizontal integration services).
• Cast and standards
Microsoft:. NET SUN: Open Net Environment (ONE) IBM: Web Service Conceptual Architecture (WSCA) W3C: Web Service Workshop Oracle: Web Service Broker Hewlett-Packard: Web Service Platform
• The ability of the application, function or operation of the exposure to other programs through the open standard, and interoperable.
• "payloads" is defined as XML.
• "transports" via http or other open Internet protocol.
• Data is accessed from a variety of programming languages, hardware platform or operating system.
• Middleware from the Internet.

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