ADR 8: One Schema per Subject

Date: May 2023

Status: Accepted

Decision

• Subjects can only have one type/schema
• We do not allow adding values for properties that are not defined in the schema, at least not via the UI

Consequences

• Simpler and more user friendly UIs
• Easier to develop said UIs
• Easier to detect issues with the data
• Not possible to have a Subject of multiple types