Ullman , Jeffrey D. <br/><br/>
Principals of database systems . 

 - New Delhi :  Galgotia Publications PvtLtd,  1994 
 - 484. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer programmingprograms data
<br/><br/><label>Dewey Class. No.: </label>005.74  / ULL