00294pam a2200121 a 4500020000500000041000500005082002800010100001600038245005400054250001100108260004200119300001100161  c  h  a5.7400000000000002bULL  aUllman,G.D.  aPrinciples Of Database SystemshTextual Documents  a3rd ed  aNew DelhibGalgotia Publicationc2011  aXI/670