Directionality of Cross Domain Relationships

Passive domains must not initiate cross domain relationships
Applies to: Cross domain relationship definition and visualisation

Definition:
Cross domain relationships must be modelled with active domains as the source and passive domains as the target. Passive domains must not initiate outbound relationships.

Passive domains include:

Correct examples:

Incorrect examples:

Implementation guidance:

Rationale:
This ensures semantic clarity, avoids visual clutter, and supports reasoning engines that depend on clear relationship directionality.