| "The countrywide encashing at once welfare lottery issue and sale management system"-to use in the countrywide encashing at once welfare lottery issue and sale management, at present, the system is running in Guangdong Province, Chongqing, the Guangxi Zhuang Autonomous Region.The monitor subsystem is a part of the "the issue and sale management system", it is a distributed system running on WAN, the server end is located in the province or autonomous region or municipality center computer room, the client side is located in the province or autonomous region or municipality center (connected through LAN), the subordinate city center (connected through PSTN or GPRS/CDMA).The system framework of the monitor subsystem is three tiers C/S (client side, middleware server, database server). The client side is compiled by using MS VB 6．0 (the communications COM module is compiled by using C++), run in the Windows platform; the middleware server is compiled by using C++, run in the Linux platform, access the database by the Sybase Open Client; the database server is the Sybase Adaptive Server Enterprise 12．5, run in the Linux platform.The thesis discussed the entire process of the monitor subsystem client side software from demand analysis, system design, code realization, test to run maintenance, combined the thought of software engineering and design patterns, has discussed detailedly the client side design and realization under three tiers distributed C/S framework.The thesis's prime works:1．The monitor client side demand analysis;2．The monitor client side summary and detailed design;3．The monitor client side code realization; 4．The monitor client side test.The thesis has three innovation spots (The detail is in the fourth chapter and the fifth chapter):1．The application of new program structure for Visual Basic 6．0client side programme;2．Apply design patterns thought to the Visual Basic 6．0 code realization;3．The using of certain special technic for Visual Basic 6．0 programme. |
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