A Study On Information-Exchanged Components Of Distributed Information Systems Based Upon XML

With the continuous reinforce of the cooperation between enterprises and the development of information and technology, enterprises' information systems are in need of share and real time exchange of information. How to transfer data of different formats belonging to different information systems has become the key point of solving the problem. XML has gradually been a standard criterion for the information share and exchange between enterprises due to its excellent capability and wonderful expansibility in cross-platform communication, which can transfer information correctly and timely to others' internal information system. We should say XML provides a new way as well as a new technology criterion for the information exchange between distributed information systems and isomerous databases. However, there are still lots of problems waiting to be solved in this kind of exchange. This paper intends to cover some research in this field.First of all, this paper makes an analysis of the XML technology system and component –based development technology system, and then it introduces the research and development of relevant technology on the establishment of the components used for information exchange and realization of function modules of those components.After that, on the basis of analysis of traditional information exchange mode of distributed information system, this paper puts an emphasis on introducing the information exchange mode and relevant technology of XML, analyzing in detail the system construction and information flow of distributed information systems of information exchange based upon XML. Using the components technology to make a componential encapsulation of the information exchange function module between isomerous databases, this paper makes a combination of the XML technology and components technology, establishes the information exchange components based on XML and makes a detailed analysis and research on the core technology realized by different function modules of those components.Finally, based on the theory research, this paper uses a real case of network tender bidding and tender offer, which discussed about how to use information exchange module based on XML to replace the traditional information exchange mode and analyzes in detail the foundation of XML standard data documents and the design of XML-Schema mode documents aiming at the XML information exchange component deployed in the bidding management, basing on which this paper proposed an important concept of establishing criteria of XML data document format as well as standard of XML-Schema followed by different industries and enterprises belonging to these industries, which will become a challenging research that has great significance in practice with further development of the information exchange technology. This paper attempts to explore in this field.