Date, C.J.. <br/><br/>
Introduction to Database Systems /  

 - Third Ed. /  
 - New Delhi-110017 :   Narosa Publishing House ,   1985 
 - p580 :  
<br/><br/><label>ISBN: </label>81-85015-58-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database Systems
<br/><br/><label>Dewey Class. No.: </label>Bv  / M1D.1;10