title: mdm : a multiple-data-model tool for the management of heterogeneous database schemes p atzeni , r torlone. authors: nan. venue: sigmod conference. year: 1997.0
title: mdm : a multiple-data-model tool for the management of heterogeneous database schemes p atzeni , r torlone 1997.0. authors: nan. venue: sigmod conference ,. year: nan