00289nam a2200109Ia 4500008004100000082002100041100002000062245003400082250001200116260004300128300000800171240913s9999||||xx |||||||||||||| ||und||  aRACK005.1  ULL/P  aJeffry D Ullman 0aPrinciples of Database System  a3rd Ed.  bGalgotia PublicationsaNew Delhic2014  a670