SQL  mthe Complete references 
James R. Groff and, Paul M; Weinberg. 
 - 2nd ed. 
 - New Delhi  Tata McGraw Hill  2003 
 - xxiv, 1062p., 25cm. 
<br/><br/><label>ISBN: </label>0-07-052850-0. 
<br/><br/><label>Dewey Class. No.: </label>005.133  / G91S