BrainTrust Investment Lab › Band 4 — Managing the ETL Environment
Band 4 — Managing the ETL Environment · book p.495 · grain: one station per walk sheet
The warehouse describes itself: every source, table, rule, screen, and run lives in one metadata home. The house that measures everything keeps its own books, too.
No walk sheets yet — this station begins when the ladder reaches it. Nothing is walked ahead of the lowest incomplete rung.
The contract — what each step must produce
| # | step | page | what the book requires |
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