00374nam a2200145 a 450000500170000002000150001708200160003210000260004824500290007425000120010326000490011530000260016470000200019070000180021020251203110919.0  a007124476X  a005.74bSIL  aSilberschatz, Abraham  aDatabase system concepts  a5th ed.  aNew DelhibMcGrawHill Higher educationc2006  axxvi,1142p.c26 cm.PB  aKorth, Henry .F  aSudarshan, S.