Focus  use the power of targeted thinking to get more done 
Jurgen Wolff 
 - Upper Saddle River, NJ  IBM Press  Pearson plc  c2005. 
 - xxx, 895 p.  ill.  24 cm. +  1 CD-ROM (4 3/4 in.) 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0131859161 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relational databases.