Every entry in the catalogue is an instance of one of these JSON Schema 2020-12 files. The rules they enforce are written out under Methods.
| File | What it describes |
|---|---|
common.schema.json | The vocabulary every entry shares: eras, reliability tiers, grains, rights, sources, provenance. |
dataset.schema.json | A documented table or layer. |
decision.schema.json | A dated act by a named body, with who paid for it. |
site.schema.json | A place where a load or a supply sat. |
gap.schema.json | A documented thing that is not published. |