Ullman, Jeffrey D.,  1942- <br/><br/>
Principles of databaseand knowledge- base systems / 
Jeffrey D. Ullman. 
 - Potomac, Md. :  Computer Science Press,  c1988. 
 - xi, 631p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780716781585 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management.
<br/><br/><label>LC Class. No.: </label>QA76.9.D3  / U44