title: calibrating the query optimizer cost model of iro-db , an object-oriented federated database system. authors: zhao-hui tang , fei sha , georges gardarin. venue: vldb. year: 1996
title: calibrating the query optimizer cost model of iro-db , an object-oriented federated database system. authors: georges gardarin , fei sha , zhao-hui tang. venue: very large data bases. year: 1996