【摘要】 随着Internet的不断发展和普及 ,传统的客户 /服务器二层应用模型已经不能满足计算机应用的扩大发行、维护和升级的要求 ,计算机应用向多层应用的发展已成为必然趋势 针对这种情况 ,笔者着重分析了PowerBuilder的分布式应用的体系结构、分布式应用中服务器端不可视对象及客户端组件的构成 阐述了分布式应用的实现原理 结合典型的三层应用模型 ,给出了用PowerBuilder进行分布式应用开发中 ,创建服务器应用和客户端应用的基本方法 提出了在开发过程中应注意的问题更多还原

【Abstract】 With the improvement and popularization of Internet, the traditional Client/Server two layer application model can’t meet the demands for enlarged distribution, maintenance and escalation of computer application, and it is an inevitable trend for the computer application to develop in the direction of multilayer application. Considering the trend, the author focuses on the systematic structure of distributed application, the invisible object at the server terminal of distributed application and the components of the client terminal. And the author also expounds the principles to realize distributed application, offers the basic methods to develop server application and client terminal application, and at the end of the paper, points out the issues to which much attention should be paid in the course of development.更多还原