Ullman, Jeffrey D  <br/><br/>
Principles of database systems 

 - 2nd ed. 
 - London:   Pitman Publishing Ltd,   1982 
 - vii, 484p. 
<br/><br/><label>ISBN: </label>0-914894-36-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Databases
<br/><br/><label>Subjects--Index Terms: </label>Network model 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3:65  / M0;M2