00312nam a2200133Ia 4500003000400000005001700004008004100021082001100062100002200073245003500095250000800130260003000138300001000168TMU20250627114435.0160921s9999    xx            000 0 und d  a005.74  aUllman, Jeffrey O  aPrinciples of Database Systems  a2nd  bGalgotiac2003aNew Delhi  a484p.