校园网络数据资源分层访问策略

校园网络数据资源分层访问策略 A MULTI TIERS DELIVERY MECHANISMS TO DATA RESOURCES OVER THE CAMPUS NETWORK 董红斌 Dong Hongbin 1 first-author 梁意文 Liang Yiwen 1 郭学理 Guo Xueli 1 张健 Zhang Jian 1 武汉大学计算机科学与技术学院 武汉大学计算机科学与技术学院 Computer Science and Technology Institute of Wuhan University, Software Engineering State Key Lab Computer Science and Technology Institute of Wuhan University, Software Engineering State Key Lab 分析了校园ＭＩＳ及数据资源的特征，针对校园信息资源范围广、关联复杂的状况，提出了数据资源统一访问策略——分层访问．数据访问分为七层，各层完成数据访问独立性的特定功能，使不同的访问软件能透明访问全部数据资源．为保证传统应用能基于网络计算访问统一数据资源，又提出了“数据访问管道”和数据库访问服务器的技术．文章分析了以应用服务器为基础的Ｎ－Ｔｉｅｒｓ计算的弊端，设计了“虚拟应用服务器”ＷＵＶ－ＡＰＰＳ，将数据访问对象构造成数据对象组件． The paper provides an analysis for the characteristic of MIS and data resources over the campus networks. Being aimed at broad information resources and complex relations over the campus network. It puts forward an unified access strategy multi tier delivery mechanisms to data resources. The data access involves seven tiers, and each tier accomplishes special function to transparently delivery all data resources, and so that, different applications can access all of data resources. To insure access the data resources by all of older applications, we put forward “Data Access Pipe” （DB PIPE） and “Databases Access Server”. Analyzed the disadvantages of N Tiers computation based on the application servers, we design a virtual application server architecture called WUV APPS that build data object components from data access objects. 数据独立性 多层结构 虚拟技术 数据管道 data independence multi tier architecture virtual tech data pipe TP393.1 1999-01-01 2021-04-01 1