Design And Implementation Of TV Promulgating Informati On System Based On COM+

In modern society, people need an information platform to communicate. Just based on this requirement, we develop TV promulgating information system based on COM+, and use component techniques in development.Software component is characterized by "Plug and Play". While designing and implementing application software, we can divide the frame of application software into some different components, which are all assembled through standard interface. In this thesis, Chapter Two introduces three prevalent standard component models, such as COM/DCOM/COM+, CORBA and EJB, compares them from four aspects, including integration, programming, usability and expansibility, and at the same time, explains their relations.In the third chapter, TV promulgating information platform is analyzed and designed. Then, through component design techniques, some all-purpose software components are acquired and designed, including customer management component, promulgating information component and dynamic report form component.Chapter Four implements promulgating information component and dynamic report form component by use of Delphi development platform and COM+ component technique, introduces the implementation of the whole system based on these software components, and the concrete implementing method.Through the application software systems development process, we can conclude that through component technology, some all-purpose components are derived from some functions of the software system, then designed and implemented through component technology; these software components can be used by other applications after being put into component library; application softwares can be constructed with high efficiency and high quality by properly re-organizing one or more software components in component library.