Research and Realization of Data Exchange Technology between Heterogeneous Database

Through analyzing the data exchange method now between heterogeneous database,this paper proposes a new idea through the XML middleware which can realize data exchange between heterogeneous database.Among them, it analyzes the XML technology and the mapping between XML and the relational database with emphasis, and through an example uses XML and the DOM technology, through template mapping between database pattern, elaborates concrete realization method of data exchange between heterogeneous database.