Ullman, Jeffrey D. <br/><br/>
A First course in database systems 
Jeffrey D. Ullman and, Jennifer Widom. 
 - Delhi  Addison Wesley Longman  2001 
 - xiii, 470p., 24cm. 
<br/><br/><label>ISBN: </label>81-7808-303-5. 
<br/><br/><label>Dewey Class. No.: </label>005.74  / U02F