BrainTrust Investment Lab › Band 4 — Managing the ETL Environment
Band 4 — Managing the ETL Environment · book 488 · grain: one station per walk sheet
Every instrument that touches the data is under version control — the exact code that built any number can be produced on demand. There are no scripts on someone's desktop here.
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 |
|---|---|---|---|
| 2 | what is under control, and what is not | p.488 | 'a “snapshotting” capability for archiving and recovering all the logic and metadata of the ETL pipeline' |
| 3 | source comparison between versions | p.488 | 'It should support source comparisons to reveal differences between versions.' |
| 5 | the book's own test, EXECUTED | p.488 | 'And you can restore yesterday's complete ETL metadata context if it turns out there is a big mistake in the current release?' |