TY  - BOOK
AU  - Nijssen, G. M.
AU  - Halpin, T. A.
TI  -  Conceptual schema and relational database design: a fact oriente d approach 
SN  - 0131672630 :
U1  - 005.75/6 19
PY  - 1989///
CY  - New York
PB  - Prentice Hall
KW  - Database design
KW  - Relational databases
N1  - Includes bibliographical references and index
ER  -