000 00293nam a2200121Ia 4500
100 _aUllman, Jeffery D
250 _a2nd ed
942 _cBK
245 _aPrinciples of database systems
260 _aGalgotia publications pvt. ltd, New Delhi
_c1989
082 _a001.64 Ull
300 _avii,484
999 _c63002
_d63002