Date, C. J. <br/><br/>
Introduction to database systems .-6th ed. 
C.J. Date. 
 - 6th ed. 
 - Reading, Mass. :  Addison-Wesley Pub. Co.,  c1995. 
 - xxiii, 839 p. :  ill. ; 
<br/><br/><label>ISBN: </label>020154329X 
<br/><br/><label>Subjects--Index Terms: </label>Database systems 
<br/><br/><label>Universal Decimal Class. No.: </label>681.3.02   / DAT'95