Relation Models

Relation models arrange a domain relation by assigning source and target shapes, participant roles, constraints, and supported modes of evaluation. For an asserted relationship, the model can name who owns the association and where references must resolve. For a derived one, it can identify the mapping or query that supplies its contents and the freshness required of the inputs.

A projection model can arrange the maintenance and exposure of those derived results. Hosting, causal dependency, and boundary inclusion remain meaningful system graph links, but they describe different structures; they do not imply an association stored or queried by the domain.

Formal relations

• arranges: Relation — Places a domain correspondence in a modeled system with explicit roles, evaluation modes, constraints, and ownership.