000 00290nam a2200121Ia 4500
100 _aUllman, Jeffrey
250 _a2nd ed
942 _cBK
245 _aPrincipal of database systems
260 _aGalgotia publication pvt. ltd., New Delhi
_c1989
082 _a001.64 Ull
300 _avii,484
999 _c24275
_d24275