Ullman, Jeffery <br/><br/>
Principles of Database systems 

 - 3 
 -   Galgotia Publications Pvt. Ltd., New Delhi  2008 
 - 670 
<br/><br/><label>ISBN: </label>2662 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Data files and databases; Computer science
<br/><br/><label>Dewey Class. No.: </label>005.74  ULL-P3