Date, C. J. <br/><br/>
The database relational model :  a retrospective review and analysis : a historical account and assessment of E.F. Codd's contribution to the field of database technology / 
C. J. Date 
 - Reading, MA :  Addison-Wesley,  2001 
 - viii, 152 p. ;  21 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0201612941  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relational databases