基于 XML 中间数据的异构数据库交换技术

随着信息化程度的不断提高，在多数企事业单位中，由于各个部门间一般采用的网络环境、操作系统和数据库系统都各有差异，形成了以各部门为核心的信息资源孤岛，数据共享和访问都比较困难．因此为解决这一问题，笔者首先介绍了基于 XML的异构数据库数据交换方面的相关技术，重点讨论了关系数据和 XML 数据的转换问题．提出了一种新的异构数据库交换系统的体系结构，并在高校数字化校园平台的基础上，将异构数据库交换方案应用到该平台的各异构数据交换系统中，同时给出了数据抽取模式的算法．并采用了 C＃语言及 ASP．NET 等相关技术对该系统中的各主要模块进行了详细的设计与实现，最后给出了实现的过程及数据交换的结果．

RESEARCH ON HETEROGENEOUS DATABASE EXCHANGE OF INTERMEDIATE DATA BASED ON XML

In the most enterprise and public institution,every department is an information and resource island because of the difference of network environment,OS and DBS among departments.Therefore,it is difficult to share and access the information resources due to the difference of departments.Firstly,this paper introduces the heterogeneous database exchange technology based on XML,then discusses the problem of exchange of relational data and XML data in detail.And finally,on the basis of the digital campus platform,the paper proposes a new architecture of heterogeneous database exchange system which is applied to the campus platform,and the algorithm of data extraction is also given.With the C #language and ASP.NET technology,every module of the data exchange system is designed in detail and implemented,and the result is also given.