Glossary term: RoleProperty

A slot with a value on the connection between two PGObjects, as defined by a RoleType

A slot with a value on the connection between two PGObject, as defined by a RoleType. This is the instance-level version of a PropertyType on an EntityType: when the edge between two PGObject is blessed with a RoleType, the PropertyTypes defined by the RoleType create the corresponding RoleProperties on the edge between the two PGObject.