title: cost models do matter : providing cost information for diverse data sources in a federated system. authors: m roth , f ozcan , l haas. venue: vldb. year: 1999
title: matter : providing cost information for diverse data sources in a federated system. authors: m tork roth , f ozcan , l haas. venue: tech . report ibm rj # 10141 , feb. .. year: nan