基于VLAN的Web数据库的自动发布系统及其应用-计算机软件理论专业论文.docxVIP

谚461{；73摘要 谚461{；73 摘要 基。数据库技术的发展，使得企业可更加及时、简单、动态地在网络上 算机网络技术的发展，给企业在网络上发布信息提供了高可靠性，高 发布信息。但是现在的企业要想在网络上发布信息，还必须有专业程序员进 行编程工作，对于异地分布式数据库不能有效的管理：而且没有和现代网络 结构很好的结合起来，使数据库中的角色和网络中的角色有机联系在一起， 广、／ 增加系统的安全性。y ／ 本论文设计了～个基于VLAN的Web数据库自动发布系统。此系统是基 于VLAN的，通过划分VLAN确定用户权限。发展VLAN技术一个主要原因 是减少在网络中的站点发生移动、增加和修改时管理开销，同时解决因数据 的广播而引起的一些性能问题。VLAN还可以实现其他一些引人注意的功能， 如安全性，对广播数据的更好的管理和控制、网络的微分段、负载分担等。Web 数据库的自动发布是指不需任何编程环节便可生成某一数据库在网上发布的 表单，使用户与数据库实现交互访问，这里本系统其实起到一个数据库发布 代理的作用：而且可以解决数据库异构的问题。 关键词 VLAN VLAN的划分 Web 数据库 ASP自动发布 AbstractWith Abstract With the develoF)ment of the computer networks technology,corporation can Dublish information more reliably and more efficiently on computer networks．While with the development of the Web database technology，corporation call publish information more timely、more simply and dynamically．However before corporation publishes information on networks，it must have programmers to program； it can not manage heterogeneous distributed database effectively．Moreover,it does not integrate modem networks stxucture rightly．So it Can not integrate the role in database with the role in networks well and has not exact SeCUrity． This paper designs a system of automatically publishing Web database on VLAN．The system defines user authority by dividing VLAN．The main reason of developing VLAN is that when the nodes in networks are moving、increasing and amending it carl reduce management spending and at the SRITIC time it Can solve the performance program brought by broadcasting data．Also VLAN Can implement other arrestive functions such as security、better management and control to broadcasting data、tiny subsection、sharing load and SO on．The system ofpublishing Web database automatically Can produce the forms published on networks for given database without programming；it Can als0 realize the access of user and database with each other．In fact the system is a proxy ofpublishing database．Moreover it Can solve the problem ofheterogeneous dambase． Key words VLAN the dividing o