Heterogeneous relational database integration model based on XML

To effectively solve the problem of heterogeneous database integration,the status of heterogeneous database integration is analyzed,and a XML-based heterogeneous relational database model is proposed.This model is divided into heterogeneous database layer,integration middleware layer and application layer three parts.The functions of the three parts in the model are depicted,and the implementations of the integrated middleware layer are discussed.The mapping rules between the database and XML are detailed,and the specific conversion process between them is given.Based on this integration middleware,a software of information management service is designed,which verify the feasibility of the middleware.