Design And Realization Of Long-Distance Education Based On Web

Distance learning comes with the computer multimedia and network communications being applying to education. It takes a significant effect on all of the education structure. The government provides the support for the development of distance learning. Distance learning based on Internet is one way of modern education. The basis platform is indispensable for teaching, FAQ, virtual experiment, real time talking, cooperating working, online test, affair manage.The paper mainly discusses how to design and realize a Web application system. The paper is composed of introduction, demand analysis, system design, system realization and so on.The chapter of demand analysis introduces the main function of long-distance Education system. LDES(long-distance Education System) can be divided into two part of the learning subsystem and teaching subsystem according to function. The learning is for students, which provides learning online, downloading courseware and so on. The teaching subsystem is for teacher, which provides testing online, .answering online.The chapter of system design introduces the design thought of the system, including: system structure, interface design, function design and database design. The system adopts the most popular B/S system structure, namely: Browser /web server/database server; B/S divides the system into three layers: The view layer, the business logic layer and the data access layer, and realizes to separate business logic, user interface and data access, which improves the maintance of application system. The chapter of system realization introduces how to realize the system. In general, the view layer uses html javascript to realize; the business logic layer apply structs frame and the data access layer uses jdbc technology .LDES applys very popular technologies such as JSP, Structs, which provides a new learning and teaching way for students and teacher and makes teaching way information-based.