Open Data Services JSON Schema Extension

An extension to JSON Schema to:

• Add keywords related to codelists

• Add keywords related to deprecation

• Disallow keywords not documented in either JSON Schema or the extension.

The extension consists of JSON Schema metaschema patches and extended metaschemas for the following versions of JSON Schema:

• 2020-12
• Draft 4

Deprecated keywords

Whilst the metaschemas reflect the recommended modelling approach, they include some deprecated keywords reflecting prior modelling approaches which may still be in use in some standards.