Application And Study On Com+ And Flexibility Technology In Erea Electronic Cooperate With Official Bussiness

With the rapid development of information technology and the evolution and popularity of Internet since 2000, a new application program which is highly distributed on Internet is urgently desired. The traditional architecture of application program can't meet the need for the new application program. How to organize the computers on network working harmoniously and coming into a distributed parallel environment, and to develop a large complicated distributed business application program, now has become the hot point now.By analyzing the advantages and disadvantages of popular distributed object technology, this paper introduces a new architecture to construct Web-based distributed application program, which is called COM+ based distributed Web application program. Basing on the Windows DNA's three tied application program architecture and using the services provided by COM+, this architecture provides a new flexible and workable solution to develop Web based application program under the distributed computing environment, logically this solution splits a enterprise application program into three abstract ties: express tie, business logic tie and data service tie. Using SOAP, this paper also presents a method to call components of programs on other networks, other systems and other object models. The system uses COM+ to distribute application program on the same platform on intranet, while it takes advantage of SOAP to call components on Internet or different platform on intranet. This paper also discusses some topics associated with the distributed Web based application system model, including: system architecture model, distributing illustration, working principle and technology characteristic.The paper also analyzes the development process and technology of MIS in details, and studies on the design method of flexible enterprise management information system. This page presents a newly flexibility of MIS which could be separated as user-oriented flexibility, developer-oriented flexibility and enterprise-oriented flexibility. The paper also presents the flexible system structure of MIS based on research of construct method for flexible production MIS.