Study Of A Loosely-coupled E-Commerce System

Due to the complexity of E-commerce system' operation logic and limitation of integrating technology in years, enterprises gradually realize the strong couplings between the integrated modular, which becomes an unconquerable obstacle in the way of E-commerce integration. Many technologies of distributed computing are proposed by international software organization and now they are widely applied to the field of E-commerce, but the tightly-coupling problem of the integrative architecture has not been solved radically for many reasons.Web services appeared, which employs Web technology and component-based technology. It uses standard Internet protocols, such as Hyper Text Transfer Protocol (HTTP) and Extensible Markup Language (XML), to embody the function into Internet and Intranet. Those component-based models such as DCOM, RMI and IIOP rely on a certain object model protocol. Web services expands these models, so that they can communicate with Simple Object Access Protocol (SOAP) and XML, thus remove the obstacle caused by the certain object model protocol. So Web services can be viewed as component program on Web.Due to its great advantage and the support of Microsoft, IBM and SUN, Web services with a variety of functions is sure to pop up in the market. This paper, combining with the current Internet technology, researches into application in E-commerce of Web services and coupling problem systematically. The following themes are addressed in this paper.In this dissertation, we first introduce the background of Web services technology, Software Component analytical method of coupling problem, E-commerce, analyze the necessity of establishing a Loosely-coupled E-Commerce System, and outline the main works of the author.Secondly, we introduces the new software development technology based on Component, Development of analytical method of coupling problem, and presents a model of system coupling degree SCD which is used in the analysis of the coupling attribute of large-scale software system.Thirdly, Web services technologies of distributed computing are introduced. A Loosely-coupled E-Commerce scheme is also presented.Finally, QJKJ decorate frame E-commerce system for Web services is described in detail, including the system design goal, the scheme selection, the architecture and detailed design process of frames process ability sharing among E-commerce system. it makes the system of E-commerce open to Internet so as to achieve the goal of sharing production resources with the ability of Web-publishing, discovering and binding resource of enterprises.