Key role in the multi-set Relationship Class
| Constant | Value | Description |
|---|---|---|
| esriRelKeyRoleOriginPrimary | 0 | Origin Primary Key. |
| esriRelKeyRoleDestinationPrimary | 1 | Destination Primary Key. |
| esriRelKeyRoleOriginForeign | 2 | Origin Foreign Key. |
| esriRelKeyRoleDestinationForeign | 3 | Destination Foreign Key. |