In this paper we deal with some security techniques applied to network elective system and the construction of an elective database.

介绍了一种可行的网上选课系统的规划、流程以及所采取的安全技术。

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Elective system can be installed on the campus of the existing network of servers, students in any school within networks of terminals on course to complete the task.

选课系统只需安装在现有校园网络的服务器上，学生在任何一台校园网内的终端上即可完成选课任务。

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Elective system can be installed on the campus of the existing network of servers, students in any school within networks of terminals on course to complete the task.

选课系统只需安装在现有校园网络的服务器上，学生在任何一台校园网内的终端上即可完成选课任务。

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