The sources · The source of truth · Element

The designation

Which system is authoritative.

The part

What it is

Chosen where the fact originates and is maintained, since a derived copy cannot be more correct than what it derives from.

Recorded with who decided, since the designation will be questioned by whoever prefers a different system.

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.