数字信息资源数据仓库的实现

An Achieve of Digital Information Resource Database Warehouse

随着图书音像技术的发展,以前只能通过纸质介质来保存的教育教学资源,越来越多地以数字版本的形式出现。包括不局限于各种格式的课件文档,音频视频学习资料。而对于这些资源的管理,不管是资源数量还是资源分类上,都远远超出了传统关系型数据库能够处理的范围。而数据仓库存储文件信息,使用分布式文件系统存储海量的文件数据,正是解决这种问题的一种表现尚可的解决方案。在向资源请求者分发这些数据时,如何保留其中的版权信息,以确保对资源的版权进行保护,不会出现泄露版权等情况。结合数据库的数字水印技术能够较好的完成上面的任务。最后一点在于即使出现资源不正当的泄露也能够做到追查来源的工作。同样,使用数字水印技术能够较好的完成上面的工作。

With the developing of digital material technology,the education resources which were saved in paper would be saved with the digital version of it.It not only includes variety of documents about class,but the audio and video learning materials.And for the management of those materials,the quantity and the classification are beyond the range which classical relative database can operate.However,the solution of using the relative database to save the information of file resources and using the distributed file system to save the files is a way which was not bad.In the divide to the users requesting the resources,there are three questions in it:how to keep the copyright in the files,how to achieve the protection of copyright and how to avoid the disclosure of copyright.With the help of digital watermark,it is good at completing those tasks;at last,it is possible to find out the revelation by digital watermark.