Dietrich, Suzanne Wagner <br/><br/>
Understanding relational database query languages / 
Suzanne W. Dietrich 
 - Upper Saddle River, NJ :  Prentice Hall,  2001 
 - xiv, 176 p. :  ill. ;  24 cm. 
<br/><br/> 'An Alan R. Apt book.' 
<br/><br/>Includes bibliographical references (p. 166-169) and index 
<br/><br/><label>ISBN: </label>0130286524  RM95.00 
<br/><br/><label>LCCN: </label>2001-273604 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relational databases<br/>Query languages (Computer science)<br/>SQL (Computer program language)