Korth/ H./ Silberschatz  <br/><br/>
Database Systems Concepts 2nd ed 

 - New york  Mc Graw Hill  1991 
 - 694 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Database
<br/><br/><label>Dewey Class. No.: </label>5.74  / KOR/SIL