Post, Gervald V <br/><br/>
Dtabase management systems  

 - 3rd ed. 
 - New Delhi:   Tata Mc Graw-Hill Publishing Company Limited,   2005. 
<br/><br/><label>ISBN: </label>0 07 060745 1 
<br/><br/><label>Dewey Class. No.: </label>005.74 P857d 2005