Relationship to the MasterPM's to PM records, used to find the PM record for a given MasterPM. (pm.pmnum = pm.masterpm). The resulting set will contain zero or one record.
Razmerje do zapisov PM v MasterPM, uporabljeno za iskanje zapisa PM za dani MasterPM. (pm.pmnum = pm.masterpm). Nabor rezultatov bo vseboval nič objektov ali enega samega.