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

 - 2nd  
 - New Delhi  Galgotia  1994 
 - vii, 484p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DATA FILES AND DATABASES
<br/><br/><label>Dewey Class. No.: </label>005.74  / ULL