Beynon-Davies, P.: <br/><br/>
Relational Database Systems : a pragmatic approach 

 -  Oxford : Blackwell  1991 
 - 187 p. 
<br/><br/><label>ISBN: </label>0000632031166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relational Databases : databases
<br/><br/><label>Dewey Class. No.: </label>005.756  / B29