第4章 数据仓库的构建

44.1„ETL„Extract„Transform„Load„ECTL„Extract„Clean„Transform„Load4.1.1„„„„„„/„/„4.1.2„„„„„„„„„„„„„„„„„„„„„„„„4.1.3„„1.2.3.4.5.6.7.4.1.4„„„„„„4.1.5„„1.2.3.„„„„„„„4.2IBM„EXPORT„IMPORT„LOAD4.2.1EXPORT„EXPORT4.2.2IMPORT„4.2.3LOAD„LOAD4.3IBM„DRDA„DataPropagator„DataJoinerDataJoiner„DataJoinerSQL„„DataPropagator„DataPropagatorRelational„DataPropagatorNon-Relational