Extract, transform, load - Wikipedia
https://en.wikipedia.org/wiki/Extract,_transform,_load
OverviewETL vs. ELTExtractTransformLoadReal-life ETL cycleChallengesPerformanceExtract, load, transform (ELT) is a variant of ETL where the extracted data is loaded into the target system first. The architecture for the analytics pipeline shall also consider where to cleanse and enrich data as well as how to conform dimensions. Ralph Kimball and Joe Caserta's book The Data Warehouse ETL Toolkit, (Wiley, 2004), which is used as a textbook for courses teaching ETL processes in data warehousing, addressed this iss…
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