DL/1 functions for application design 

 - White Plains, N.Y. :  International Business Machines Corporation /  1981 
 - 233 p. :  ill. ;  29 cm. 
<br/><br/> 'Student text'  'SR20-4680-0' 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DL (Computer program language)<br/>Electronic digital computers--Programming<br/>Data base management