摘要
异构数据的抽取和清洗是企业内外异构信息统一的必由之路。基于此,该文以自行开发的ETL工具为背景,分析了异构数据抽取清洗模型的结构以及实现方式,并集中论述了其中元数据的结构。
Heterogeneous data extracting and cleaning is a necessary approach to integrate heterogeneous information inside and outside enterprise.This paper regards ETL of certain tool as background,analyses the structure and realized method of model of heterogenous data extracting and cleaning based on metadata.Finally concentrates in expounding the structure of metadata.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第30期175-177,共3页
Computer Engineering and Applications
关键词
元数据
数据清洗
数据仓库
metadata,data cleaning,Data Warehouse