基于中间件的远程教学资源数据库模型研究

Study on model of the middleware-based distance education database system

随着Internet和web技术的飞速发展和信息社会的到来,远程教育资源服务环境出现了许多新的变化,任何个别教育资源库都不可能收藏和提供所有的教育资源,远程教育资源库之间的共享成为一种必然的发展趋势。本文讨论了分布式体系的层次结构和特点,分析了传统的二层C/S和三层B/S结构存在的缺陷;在此基础上,提出了一种改进的多层B/S结构,并研究了如何利用这种多层结构来构建基于中间件的远程教育教学资源数据库系统。

With the swift and violent development of Internet & Web technology, the great change has taken place in the area of the distance education. It is impossible for any individual databases of the distance education to have and supply all the service. The share of the databases of the distance education is an important trend. This paper discusses the architecture and traits of the distributed system and points out the defects existing in the two-tiers C/S & three-tiers B/S architecture after analyzing and comparing them. Furthermore, An improved multi-tiers B/S architecture is designed and put forward. This paper also discusses how to construct the middleware-based distance education database system by using it.