Ullman, Jeffrey. <br/><br/>
A first course in database systems 
/ Jeffrey Ullman 
 - Upper Saddle River, N.J.   : Prentice-Hall   , 1997 
 - xiii, 470 p. :  il. 
<br/><br/><label>ISBN: </label>0138613370 
<br/><br/><label>Subjects--Topical Terms: </label><br/> BASE DE DATOS
<br/><br/><label>Universal Decimal Class. No.: </label>004.65 U41f