O'Brien, J.A. Introduction to information systems - 8th - IRWIN London 1997 - 514 - Database Management Information Systems ISBN: 0-256-20937-5 = O'Brien, J.A. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 6169 Nat. Bib. Agency Control No.: 025:62 O'BRI Subjects--Topical Terms: Information Technology Universal Decimal Class. No.: 025:62