title: the heterogeneity problem and middleware technology : experiences with and performance of database gateways klaudia hergula , fernando de ferreira rezende vldb. authors: nan. venue: nan. year: 1998.0
title: the heterogeneity problem and middleware technology : experiences with and performance of database gateways 1998. authors: fernando de ferreira rezende , klaudia hergula. venue: very large data bases. year: nan