摘要： 制定数据元标准是实现信息系统集成的基础，准确把握系统数据标准化需求，建立系统全域数据需求视图是准确制定数据元标准的前提。该文以信息系统的数据重构过程为背景，围绕快速、准确提取数据元的需求，对面向信息系统需求的数据元提取方法进行总结与归纳。通过对几类常用抽取方法特点的对比，方便用户在工程应用中从需求出发综合使用各类数据元提取方法，从而提高数据标准化的质量与效率。

关键词: 信息系统, 提取, 数据元

Abstract: It is fundamental to make standard of data element in the integration of information systems. Understanding data demand of information systems precisely and constructing the global data view are the precondition of instructing data standardization. Based on the data re-instruction of information system, the paper compares the characteristics of methods of data element distilment. It is convenient for consumers to start from appliance project to choose appropriate method of data object distilment, and improve quality and efficiency of data standardization.

Key words: Information system, Distill, Data element