Foto N. Afrati Rada Chirkova Manolis Gergatsoulis Vassia Pavlaki Designing Views to Efficiently Answer <i>Real</i> SQL Queries. 332-346 2005 conf/sara/2005 SARA http://dx.doi.org/10.1007/11527862_26 db/conf/sara/sara2005.html#AfratiCGP05