Themis Palpanas Junaid Ahsenali Chaudhry Periklis Andritsos Yannis Velegrakis Entity Data Management in OKKAM. 729-733 2008 DEXA Workshops http://doi.ieeecomputersociety.org/10.1109/DEXA.2008.13 conf/dexaw/2008 db/conf/dexaw/dexaw2008.html#PalpanasCAV08