K. Selçuk Candan Yi Chen 0001 Richard T. Snodgrass Luis Gravano Ariel Fuxman Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2012, Scottsdale, AZ, USA, May 20-24, 2012 ACM SIGMOD Conference 2012 978-1-4503-1247-9 http://dl.acm.org/citation.cfm?id=2213836 db/conf/sigmod/sigmod2012.html