Database Systems for Advanced Applications 17th International Conference, DASFAA 2012, International Workshops: FlashDB, ITEMS, SNSM, SIM3, DQDI, Busan, South Korea, April 15-19, 2012. Proceedings - Yu, Hwanjo; Yu, Ge; Hsu, Wynne; Moon, Yang-Sae; Unland, Rainer; Yoo, Jaesoo (Springer Berlin Heidelberg, 2012)