silver_sales), a
one-line description of what it holds, its layer, and how many columns it documents.
Layers
Every dataset sits in one of four layers, describing how far it’s been refined from raw source data toward analysis-ready. The catalogue orders the most query-ready first:| Layer | What it is |
|---|---|
| Silver | Cleaned and joined — conformed data you can query directly |
| Gold | Aggregated, analysis-ready tables built for reporting |
| Canonical | Your mastered records (see canonical entities) |
| Bronze | Raw mirrors of each source, exactly as it arrived |
The Catalogue is where you confirm what’s available to ask about. To see which
systems feed these datasets and how fresh they are, head to
Sources.