Date, C.J. <br/><br/>
An introduction to database systems / 
by C.J. Date. 
 - 5th ed. 
 - Reading, Mass. :  Addison-Wesley,  1990. 
 - xxv, 854 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0201513811 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management.