摘要
在软件工程流程中 ,系统体系结构设计是基础 ,不同的体系结构要求不同的底层数据模型及相应的实现手段 .分析比较了适用于网络环境的两种体系结构 ,文件服务器架构和客户 /服务器 (C/S)架构 ,选择胖客户C/S架构作为本系统的基础体系结构 ,并在此基础上结合“青藏铁路数字路基与仿真平台”要求体系结构能支持网络分布式环境、易于功能扩展、具备可操作性等特点 ,描述了系统的工作流程 ,给出具体的系统配置及开发集成的实现手段 .
Architecture design is the foundation of software engineering flow. Different architectures require different data models and corresponding realizing methods. There are two kinds of Architectures applicable to software development under network environment, which are File Server Architecture and Client/Server(C/S) Architecture, and the C/S architecture includes both thin client C/S and thick client C/S. Digital Embankment and Numerical Simulation Platform of the Qinghai-Tibetan Railway system needs complicated GIS function and includes a mass of data, such as normal GIS data, atmosphere, ecology and frozen soil data, and so on. To meet these needs, thick client C/S is chosen. \;Secondly, based on the need of user, the system structure and the system working flow are described in this. In the vertical layer, C/S Architecture consists of User Services, Business Services and Data Services. Combining User Services and Business Services is called thick client C/S. In the system of Digital Embankment and Numerical Simulation Platform of the Qinghai-Tibetan Railway , the Server charges for data storage and management and the Client realizes all application functions. Further, Client program supplies some linkers, which can connect Final, Arcpad and some specialty program. \;Thirdly, the system is a large project, which involves multifarious knowledge. The requirement of user can t be realized in one step, which needs the system expandable. The architecture system stated in this paper meets this need through spiral iteration between system developing and user requirements analysis.\;Finally, in order to realize the architecture, the software requirement and realizing method are described in this paper.
出处
《冰川冻土》
CSCD
北大核心
2002年第5期646-651,共6页
Journal of Glaciology and Geocryology
基金
中国科学院知识创新工程重大项目 (KZCX1 SW 0 4)资助
