title: evaluating functional joins along nested reference sets in object-relational and object-oriented databases. authors: r braumandl , j clauпen , a kemper. venue: vldb. year: 1998
title: translating update operations from relational to object-oriented databases. authors: pm reppert , fd morgan , mn toksoz , x zhang , j fong. venue: information and software technology ,. year: 2000.0