The Research Of Heterogeneous Data Resources Integration

Because of the development of computer and wide using of database, the"Information Island"problem of the enterprise's information system gets worse. The technology of heterogeneous data resources integration is for resolving the problem of facility, flexible accessing between heterogeneous data resources. In the process of researching heterogeneous data resources integration, we have compared the traditional integration technology--federal database, Mediation and data warehouse. And we also research Web Service technology which is popular in recent years.Web Service has the predominant features of good interoperability, encapsulation, loose coupling structure and standard of protocol. So, currently integration scheme based on Web Services has become the leader of EAI field. We propose a model of heterogeneous data resources integration with technology of Web Service. In the process of wrapping"leaving system"into Web Service, we proposed the method based on XQuery to resolve the different of the format between result of program and user's requirement. In the same time, we have researched the problem of how to compose existing Web Service dynamically based on the semantic web. We propose a model of Web Services composition. We have researched dynamic Web Service composition algorithms based on semantic web and ontology. Finally we accomplish the integration system. In this process we emphasis on the design of business process and the recall of Web Service. These researches can provide new idea on the research of heterogeneous data resources integration.