Date , C.J. <br/><br/>
An introduction to database systems 

 - Massachusetts   Addison - Wesley publishing Co.  1981 
 - xxviii ,574 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Computer science . 2. Database systems .
<br/><br/><label>Dewey Class. No.: </label>001.6 D26,i