【摘要】 介绍两层和三层客户／服务器结构，分析它们各自的优缺点，以及对重用的难易程度和开发阶段进行了比较，以便对给定项目进行结构的适当选择。更多还原

【Abstract】 This article describes two and three-tier client/server architecture, and analyzes their respective advantages and disadvantages. Differences in development efforts, and ease of reuse are also compared to further help choose an appropriate architecture for any given project.更多还原