00351nam a2200133Ia 4500008004100000041000800041082001600049100002300065245003600088250000600124260005100130300001200181650002400193210716s1984    xx            000 0 und d  aeng  a005.74 ULLJ  aUllman, Jeffrey D.  aPrinciples of database systems.  a2  aNew DelhibGalgotia Publications Pvt Ltdc1984  avii,484  aDatabase Management