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

 - 2nd  
 - Galgotia publication   Delhi   2001 
 -  176 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DATA FILES & DATABASE 
<br/><br/><label>Dewey Class. No.: </label>005.74 ULL