The Research And Implementation Of Heterogeneous Conflict Resolution In Information Integration System

With the great development of information technology, especially Internet, there is obvious improvement of the application in many fields. Most of the companies, schools and departments developed their management information systems, which makes working more convenient and efficient to people. Because of the strong requirement, information technology accepted by more and more people. At the same time, they prefer more excellent applications.Indeed, there are some disadvantages in the application. A general difficulty is the information can not be shared well. At the beginning of the development of the application of information technology, there is no uniform data standard. So there are a lot of different in the description, storage, access and so on.These differences brought great difficulty to the information sharing inside and outside. People are eager to clear up these"information islands". Information Integration technology can make the information integrated and provide a uniform interface for the users. As one of the solutions of information integration, heterogeneous database replication technology got more attention.After deep research and synthesize existed information integration technology and heterogeneous database replication technology, the replication method called Heterogeneous Database Replication Method Based on"SQL Regeneration"is optimized and perfected.It takes the heterogeneities as the most important problems, and discussed the resolutions toward these typical heterogeneous conflicts. In order to improve the automatic ability, the"Attribute Space"is brought into the schema mapping and the schema mapping arithmetic based on it is proposed. A detailed description of the model establishing, arithmetic design and realization is given. Further more, a heterogeneous conflict management module framework which manages various conflicts that dispersed in the system is provided, and the realization based on AOP is discussed. Finally, the researches in the paper are summarized and the future works are presented.