Ullman, Jeffrey D. A first course in database systems / Jeffrey D. Ullman and Jennifer Widom - 2nd ed. - New Delhi : Pearson Education, c2002. - xvi, 511 p. : ill. ; 24 cm. ISBN: 8131715353 LCCN: Subjects--Topical Terms: Database management LC Class. No.: QA76.9 / .D3U42 2002 Dewey Class. No.: 005.74 / U41f