Computer Science / Unit 8 CS 0438 short lesson, about 20 seconds
Extraction, Transformation, Loading
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The idea
ETL is the data integration process feeding a warehouse: extraction pulls from source systems, fully or incrementally; transformation fixes the format; loading delivers the result.
In practice
Freight consolidation runs the same three steps — collect, repack, deliver.
Where people slip
Transformation is where quality is won or lost.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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