The customer can then use protocol SOAP to call the functions disponibilizadas in archive WSDL. A typical document WSDL will have the following structure demonstrated in the Picture 1 Picture 1 simplified Structure of an archive WDL. ………. 1. Web Services Web Services or Servios Web is 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 standars, in particular XML and HTTP. Web Services allows that applications interact between itself independent of its platform of development, these applications sends they receive given in format XML, this and the only premise for the communication of a service web. The XML (Extensilble 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 softwares or components of softwares capable to interact, either sending or receiving information, with others softwares, not importing the programming language where these had been developed, the operational system where they twirl and the hardware that is used … (GOMES, 2010, p.13/14). Web Services possesss 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 makes with that the more flexible service is ace varies available platforms in the market, generally and implemented aiming at to disponibilizar a service in the world-wide net of computers ' ' internet' '.