GraphQL exposes your backend model the same way your json response to a REST api exposes the backend model - they dont. It's up to your REST api to assemble dat

GraphQL exposes your backend model the same way your json response to a REST api exposes the backend model - they dont. It's up to your REST api to assemble data from the database (or elsewhere) and return them in a structured format. GraphQL resolvers do the same. You can hit another API, query a database, or return file data. It's up to you what you want each field to resolve to.