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1 引言如何集成Internet上异构、自治的资源是目前业界面临的挑战之一。传统集成异构数据资源的研究大都把注意力集中于在集成中出现的语义和模式上的异构性问题,提出的解决方法通常依赖于提出一种语义丰富的数据模型,这种数据模型使得分布式数据之间的语义连接表示变得更容易。如联合数据库采用一个由集成的联合模式和包装器(Wrapper)两个主要构
1 Introduction How to integrate heterogeneous and autonomous resources on the Internet is one of the challenges facing the industry. Most of the researches on the traditional integration of heterogeneous data resources focus on the semantic and schema heterogeneity problems in the integration. The proposed solutions often rely on the introduction of a semantic rich data model that enables Semantic links between distributed data representations become easier. Such as the joint database using a combination of the integrated model and wrapper (Wrapper) two main structures