导　　师： 傅秀芬;汤庸

学科专业： 081203

授予学位： 硕士

作　　者： ;

机构地区： 广东工业大学

摘　　要： 随着Internet迅猛发展，WEB网站的信息资源为人们的学习和生活提供了极大的方便。然而，由于WEB站点之间的异构性，资源的有限共享成为急需解决的问题。另一方面，人类社会是一个广泛合作的社会群体，任何一项复杂的工作都离不开各领域专家之间的合作，于是系统间协同工作的基础：数据层的协同工作成为一个重要研究方向。本文研究的主要内容：基于XML的WEB数据库的协同工作问题。其实质是不同数据源之间不同格式的数据共享访问，相互操作。数据之间格式转换成为本文研究的重点。 XML是一种可扩展的、自描述数据格式。JAVA是一种真正的跨平台的开发环境，提供支持XML的数据接口JAXP。JAVA与XML结合是本文中数据库协同工作的解决方案。 本文首先介绍研究的背景和理论基础，对XML、CSCW技术和WEB的半结构化数据特点做了简单介绍；接着对数据库协同工作中的关键技术：XML与关系数据库之间的相互转换进行了深入的研究，阐述了转换过程中的原理、思想精髓等重点问题，提出了通用的转换规则，以及在WEB数据库中数据的提取、集成、转换等实现技术；同时还介绍了在JAVA环境下数据绑定的过程，并提出一个协同数据库管理系统的模型DataChange。详细介绍了模型的结构、功能和技术实现。最后给出了模型的二个应用领域和结论分析。并分析有待改进之处，作为将来研究方向的参考。 此外，还结合了实际应用验证了整个模型的可行性和先进性，本课题的研究将对协同领域的研究起到一定的推动作用。 With the development of Internet, Web's rich resources provided very big convenient for study and the life to people. However WEB site is a great heterogeneous database. Limited sharing of resources becomes a question which to be solved. On the other hand, the mankind is the society colony with extensive cooperation, and any complicated work depends on cooperation between the experts of each domain. So the extensive deep cooperation among systems becomes important development direction in Internet. Coordination of data layers as its foundation becomes an important research direction. In my thesis, we discuss main problem which cooperation work based on XML in WEB databases. Its essential really is sharing visiting and mutual operation among the different data sources. Transform among data structure becomes emphases in my thesis. XML /(extensible Markup Language/) is an extensible and descriptive language. JAVA is one kind of genuine development environment in heterogeneous platform, and provides JAXP interface for XML data. JAVA and XML is solved scheme of cooperation work. Firstly we introduced research background and theory foundation. Data characteristics of half structure and XML and CSCW are simply introduced; Very important critical technology of cooperation work: transform between XML and the relational database is researched deeply secondly. The emphatic questions such as principle and thought are expatiated, and a general transformation rule and realization such as the data abstract, integration and transform are put forward; As well as we introduced data binding in JAVA environment, and put forward a DataChange model which works in cooperation work. We introduce structure function and realization of model.We give out the conclusion analysis and two application domains finally. And analysis remains need to be improved, and as a research reference in future. In addition, feasibility and priority are verified in real application. This subject will impel the research in CSCW.

关 键 词： 异构数据库 协同 数据提取集成

领　　域： [自动化与计算机技术] [自动化与计算机技术]