Maybe. The current draft is here: https://json-schema.org/draft/2020-12/json-schema-core.html https://json-schema.org/draft/2020-12/json-schema-core.html Stil

Maybe. The current draft is here: https://json-schema.org/draft/2020-12/json-schema-core.html https://json-schema.org/draft/2020-12/json-schema-core.html Still a "draft" standard as far as I can tell. I have never seen this implemented or used but I'm not deep into the JSON world. This looks to me like "XML as a database" all over again, but correct me if it has some other application. There's nothing wrong with XML or JSON schemas, but they are not equivalent to a relational schema -- they are more (properly) used for validation and standardization, i.e. for a data interchange format both sides need to agree on the schema. An interchange format is not a database, it's a representation of things that might be retrieved from or stored in a database.