Ritchie, Colin. <br/><br/>
Relational database principles / 
Colin Ritchie. 
 - London :  Continuum,  1998. 
 - xi, 283 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0826454224 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relational databases.<br/>Relational databases--Problems, exercises, etc.<br/>Database management.