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

 - 2nd ed. 
 -  Maryland : Computer Science Press  1982 
 - 484 p. 
<br/><br/><label>ISBN: </label>0000914894366 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management
<br/><br/><label>Dewey Class. No.: </label>005.74  / U44