Currently, the configuration properties are NOT additive. So, for example, a property is defined in dab-config.json, but NOT defined in dab-config.Development.json, it will be considered undefined since we give preference to the environment specific file.

This issue is to discuss if such a union is desirable? What to do when missing properties are conflicting with each other?

See this discussion: https://github.com/Azure/data-api-builder/pull/678/files#r947322896