Ramez Elmasri, Shamkant B.Navathe Fundamentals of Database Systems - 0 - 1994 - 873 - 0 . 0 ISBN: 0-8053-1748-1 10000 Source: Хуучин номуудыг каталогт оруулсан Subjects--Index Terms: Data base management Dewey Class. No.: 005 / F-97