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Key terms: data etl load tt processing database dw extract tables layer rows transform parallel values columns integration etl process update indexes null sql validation salary involves graph audit disable partition data warehouse etl layer sequentially etl system data may source systems terabytes cleansing etl tools bulk load relational load phase end target makes sense data integrator data quality data warehousing extracted data parallel processing volumes of data target database better performance Search external links cited by footnotes on Wikipedia page Extract, transform, load: |
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