ETL in plain language
A jargon-free introduction to ETL — what Extract, Transform, and Load actually mean; the vocabulary defined without hand-waving; concrete examples; and how to decide when an organization actually needs one.
Data-Warehouse
ETL's real failure mode is silent, not slow
ETL’s dominant failure mode isn’t a slow pipeline — it’s a green one that produces wrong data. Four invariants that separate ‘finished’ from ‘correct.’