00346nam a2200145Ia 4500008004100000041000800041082001600049100001500065245002900080250001200109260002200121300000800143365001600151700003300167230718s9999    xx            000 0 und d  aeng  a005.74bKOR  aKorth H.F.  aDatabase System Concepts  a2nd ed.  c1991bMcGraw-Hill  a694  cRs.b348.60  aKorth H.F. & Silberschatz A.