关键词 应用软件;异构数据库;XML;数据交换 - I - Research of Data Exchange Technology of Heterogeneous Database in Manufacturing Industry Application Software Based on XML Abstract As the development of information technology, informationizing has become the core to improve the competence of manufacturing industry. Applied softwares such as CAX、PDM、ERP in manufacturing industry have become an important technology field of manufacturing technique in China, while they are just in a starting stage. Integrated system of applied software in manufacturing industry can shorten production generation period efficiently and accelerate product transfer from design field to manufacturing field. The present application status of information technology in manufacturing industry is analyzed in this paper, and the problems faced in applied softwares in manufacturing industry are expounded. Also the necessity and importance of applied softwares in manufacturing industry are discussed and the integrated method of heterogeneous data is researched. A data exchanging model based on XML which have height generality and expansibility is prop