Pentaho_Data_Integration_4_Cookbook
Pentaho_Data_Integration_4_Cookbook,ETL工具，Incomputing,extract,transform,load(ETL)referstoaprocessindatabaseusageandespeciallyindatawarehousing.TheETLprocessbecameapopularconceptinthe1970s.[1]Dataextractioniswheredataisextractedfromhomogeneousorheterogeneousdatasources;datatransformationis
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