title: data-driven understanding and refinement of schema mappings laura m. haas , ling-ling yan , ronald fagin , renée j. miller 2001. authors: nan. venue: sigmod conference. year: nan
title: data-driven understanding and refinement of schema mappings ling ling yan , ren &#233; e j. miller , laura m. haas , ronald fagin. authors: nan. venue: international conference on management of data. year: 2001.0