00497nam a2200169Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 681.31 ULL Ullman, Jeffrey D 13860 Principles of database systems Jeffrey D Ullman 2nd ed. New Delhi Galgotia Publications 1985 vii, 484p. Database systems 12308 BK 8629 8629 0 0 0 0 BAN BAN GEN 1986-03-10 0 681.31/ ULL 9502 2021-11-05 1986-03-10 BK