Computer Applications for Database, Education and Ubiquitous Computing : International Conferences, EL, DTA and UNESST 2012, Held as Part of the Future Generation Information Technology Conference, FGIT 2012, Gangneug, Korea, December 16-19, 2012. Proceedings - Tai-hoon Kim, Jianhua Ma, Wai-chi Fang, Yanchun Zhang, Alfredo Cuzzocrea ((Communications in Computer and Information Science))