Ullman, Jeffrey D.,  1942- <br/><br/>
Principles of database systems  [[Book] /] 
Jeffrey D. Ullman. 
 - 2nd ed. 
 - Rockville, Md. :  Computer Science Press,  [1983] c1982. 
 - 484 p. :  ill. ;  24 cm. 
 - Computer software engineering series .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [451]-473. 
<br/><br/> All age. 
<br/><br/><label>ISBN: </label>0716780690 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management.
<br/><br/><label>Dewey Class. No.: </label>001.64