Research And Realization Of J2EE-Based Enterprise Integration Of Heterogeneous Data Resources

The integration of heterogeneous data resources (IHDR), a classical problem in the database domain, is the foundation of information integration and conformity. In recent years along with the rapid development of network, IHDR becomes a disquisitive hotspot again.Firstly, I review the former literatures about IHDR. Aiming at the enterprise application's characters and requirements, I bring forward a conception of Enterprise Integration of Heterogeneous Data Resources (EIHDR). From the point of middleware technology, combined with the enterprise application's idiographic characters, I ascertain the paper's researchful goal toward EIHDR.Secondly, in consideration of better integration of heterogeneous data resources and query optimizing, I adopt the "Data Tree" theory to construct a mathematical model of EIHDR and solve the query in data resources by relational operation in mathematics. There are some differences in different data source's basic processing capability and I bring forward an EIHDR's integration strategy based upon data tree to solve them.Thirdly, aiming at the data resouce's accessing purview in enterprise applications, I bring forward a conception of Application Theme and establish an alias mechanism and a writing-purview mechanism based on it. For the sake of enterprise applications better accessing many associate tables, I bring forward a conception of Virtual Table.Lastly, in the cource of applying EIHDR theory to practical EIHDR system, I have researched a lot of relational technologies of EIHDR realization. In the end of my paper, I provide a realizable EIHDR system scheme based on J2EE and achieve a comparatively satisfiable effect in the cource of practical enterprise applications.