摘要
异构信息系统集成中的模式集成是核心部分,模式集成的关键是选择合适的公共数据模型来实现全局视图和局部数据源模式之间的转换和映射,分析了现有数据集成系统的研究和开发现状,在Wrapper/Mediator结构的基础上研究了基于扩展HDM公共数据模型的异构信息系统数据集成环境的框架,HDM具有良好的表达能力和操作性能,本文给出了HDM的形式化描述以及基于HDM的模式转换方法,讨论了基于HDM的模式集成的若干关键技术并对进一步研究做了展望.
Schema integration is core of heterogeneous information integration system,in which CDM is the key part,which is used to realize the transformation and mapping between global view and the local schema,this paper firstly analyze the research actuality of data integration system,on the foundation of Wrapper/Mediator architecture giving the study on data integration environment framework based on extended HDM, HDM has a good description ability and operating performance,this paper gives the formal description of HDM and the transformation method on it, discus some of the key technology of HDM based schema integration, at last a view of further research is given.
出处
《小型微型计算机系统》
CSCD
北大核心
2008年第6期1020-1026,共7页
Journal of Chinese Computer Systems
关键词
异构数据源
模式集成
HDM
heterogeneous data sources,schema integration,HDM
