Hamidah Ibrahim Zarina Dzolkhifli Praveen Madiraju Checking the Integrity Constraints of Mobile Databases with Three-Level Model. 185-188 2008 BNCOD http://dx.doi.org/10.1007/978-3-540-70504-8_18 conf/bncod/2008 db/conf/bncod/bncod2008.html#IbrahimDM07