olemus
UML jm
ISO 13374-2:
näitab, kumb seose pool on teadlik teisest poolest; navigeeritavus võib olla kahepoolne (mõlemad pooled on teisest teadlikud) või ühepoolne (üks pool on teisest teadlik, ta vastaspool aga mitte)
= Indicates which end of a relationship is aware of the other end. Relationships can have bidirectional navigability (each end is aware of the other) or unidirectional Navigability (one end is aware of the other, but not vice versa).