title: supporting top-k join queries in relational databases walid g. aref , ahmed k. elmagarmid , ihab f. ilyas vldb 2003. authors: nan. venue: nan. year: nan
title: efficiently instantiating view-objects from remote relational databases byung suk lee , gio wiederhold. authors: nan. venue: the vldb journal -- the international journal on very large data bases. year: 1994.0