Date, C. J. An introduction to database systems / C. J. Date - 4th ed. - Massachussetts : Addison-Wesley, c1986. - vol. 1 ; xx, 639 p. : ill. ; 24 cm. - Addison-Wesley Systems programming series . ISBN: 0201142015 LCCN: Subjects--Topical Terms: Database managementComputer science LC Class. No.: QA76.9 / .D3D37 1986 Dewey Class. No.: 005.74 / D232i