Instrumentation · The joins · Element
The limits
What cannot be joined, and what that prevents.
The part
What it is
Privacy constraints, technical gaps and third-party data that arrives without identifiers.
Naming the limits prevents analysis being commissioned that cannot be delivered.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.