Date, C. J. An introduction to database systems / C.J. Date. - 7th ed. - Reading, Mass. : Addison-Wesley, c2000. - xxii, 938 p. : ill. ; 24 cm. Includes bibliographical references. ISBN: 0201385902 LCCN: 99030439 Subjects--Topical Terms: Database management. LC Class. No.: QA76.9.D3 / D365 2000