Informix guide to SQL - vol. 1  reference 

 - New Jessey  Prentice-Hall of India  1981 
 - xiv, 422p. : ill. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database systems -- SQL<br/>Informix<br/>SQL<br/>Structured query language