Research And Implement Of The Building XML Web Services For The Microsoft .NET Platform

What the Web did for program-to-user interactions, Web Services are poised to do for program-to-program interactions. Web Services allow companies to reduce the cost of doing e-business, to deploy solutions faster and to open up new opportunities. The key to reaching this new horizon is a common program-to-program communications model, built on existing and emerging standards such as HTTP, Extensible Markup Language (XML), Simple Object Access Protocol[19][22][29] (SOAP), Web Services Description Language (WSDL) and Universal Description, Discovery and Integration (UDDI).Web Services allow applications to be integrated more rapidly, easily and less expensively than ever before. Integration occurs at a higher level in the protocol stack, based on messages centered more on service semantics and less on network protocol semantics, thus enabling loose integration of business functions. These characteristics are ideal for connecting business functions across the Web both between enterprises and within enterprises. They provide a unifying programming model so that application integration inside and outside the enterprise can be done with a common approach, leveraging a common infrastructure. The integration and application of Web Services can be done in an incremental manner, using existing languages and platforms and by adopting existing legacy applications.SOA presents the big picture of what you can do with Web Services. Web Services specifications define the details needed to implement services and interact with them. However, SOA is an approach to build distributed systems that deliver application functionality as services to end-user applications or to build other services. SOA can be based on Web Services, but it may use other technologies instead. In using SOA to design distributed applications, you can expand the use of Web Services from simple client-server models to systems of arbitrary complexity. SOA is the new principle used as logic module in the computer program(named as Services),which can be thought as a guidance of design,exploitation,deployment ,arrangement of the logic module,and it can form a proper way to build application program,organize the IT fundamental infrastructure and operation function.Although SOA is often linked with XML and Web Services technology,the latter is usually nothing more than regarded as the technical realization of the SOA principle in allusion to the real application surroundings.Based on the trend which Microsoft.Net and IBM WebSphere has being brought out ,advocated and the demand that more and more company and enterprise gave out increasingly day by day, the author put forward the opinion that only by alteration ofthe orthodox and heave cost integration mode,the expeditiousness and unfixed coupling system integration can be realized. And at the same time, by using the core and important products such as Windows 2003.Visual Studio.Net and SQL Server 2000, some technology has been realized systematic from part to whole, such as the parse and process of the xml document, query technique and the development of the supervision system, at the end part of this paper, the compositive Web system has been exploited and demonstrated using Web Services, UML, some very important and profound technique.