Gruber, Martin  . <br/><br/>
Understanding SQL /   Textual Documents 
Martin Gruber. 
 - New Delhi :   BPB ,   1990. 
 - NULL ;   NULL. 
<br/><br/><label>Subjects--Index Terms: </label>Relational Database S 
<br/><br/><label>Dewey Class. No.: </label>005.7565S  / GRU