关键词: XML，数据传输优化，领域数据工程

Abstract: XML are widely used in various areas due to the usability, comprehensibility and cross-platform attribute. Although the XML technique can deal with the cross-platform transmission of domain data efficiently, the performance of this technique is limited by the fact that a great deal of additional data may be transmitted to keep integrality. This transmission problem not only increases the pressure of network, but also delays the response of data reserve. This paper proposed an optimized transmission technique for domain-special data based on XML.The thesis of this technique is to keep the attribute of XML，and to organize the elements of XML file in term of certain logical relationship and domain knowledge, i. e. based on certain rules, the XML data is divided into a series of classes to be transmitted without entire XML file. This approach can effectively resolve the problem arosen by the fact that the partial modification of XML data files lower the performance of system Rules and method of the various granularity partitions were given. Application condition and efficiency of the method were given too. Proposed methods which have been applied in petroleum field can improve the efficiency of transmission.

Key words: XML,Data transmission optimization,Domain data engineering