Narayan S. Umanath.  2015 <br/><br/>Data modeling and database design : Narayan S/ Umanath.  - 2nd edition  - United States of America :  Cengage Learning,  ©2015. <br/><br/><label>ISBN: </label>9781285085258 <br/><br/><label>LC Class. No.: </label>QA 76.9  / Um1 2015