Ability to indicate what data platform zone the schema / entities belong to.

Most all data platforms have the concept of zone, or layers. For example, "Ingestion", "Integration", "Consumption", "Data Lake" are a few.

To be able to annotate, such as is done between schema and entity, that a schema / entity "belongs" to a specific zone would be very useful.  This could sit between Environment and Schema, though that relationship should be optional

Zone "Integration" -> Schema "Salesforce" -> Table "Customer"