Bill Howe David Maier Nicolas Rayner James Rucker Quarrying dataspaces: Schemaless profiling of unfamiliar information sources. 270-277 2008 ICDE Workshops http://dx.doi.org/10.1109/ICDEW.2008.4498331 conf/icde/2008w db/conf/icde/icdew2008.html#HoweMRR08