Web Services

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WEB SERVICES Web Services or Servios Web are using to disponibilizar interactive services in the Web or Internet, being able to be had access by other applications, is identified by URI (Unique Resource Identifier), described and defined using XML. The reason becomes that it attractive is the fact of this model to be based on technologies standards, in particular XML and HTTP. Web Services allows that applications interact between itself independent of its platform of development, these applications sends and receives given in format XML, this and the only premise for the communication of a service web. The XML (Extensible Markup Lenguage, or Language of Extended Marking) and a technology that facilitates the document analysis for programs, that allows to the exchange and exhibition of content of databases, and can also be used for exchange of messages in the communication of distributed systems, will not be carried through a deepened study of technology XML since the same it is not fit in the target of the article. Using this technology we can develop software or components of software capable to interact, either sending or receiving information, with others software, not importing the programming language where these had been developed, the operational system where they twirl and the hardware that is used … (GOMES, 2010).

Web Services possess all the necessary information so that other systems can interact with the service, called to the methods and protocols communication, this integration and made through exchanges of messages based on XML this it makes with that the more flexible service is ace varies available platforms in the market, generally and implemented aiming at to responsibility a service in the world-wide net of computers ‘ ‘ internet’ ‘. Better to understand the functioning of a Web Service we go to make a study of its architecture and employed technologies UDDI (Universal Description Discovery and Integration): the UDDI consists of supplying ways so that the Web Services is registered and published in the net this it allows that services are located in form of repositories, another functionality of the UDDI and the storage of WSDL.Atualmente archives exists two standards of development of Web Services, standard SOAP and standard REST or RESTfull, the article approaches only standard SOAP, to follow meets one brief explanation of the involved technologies.