TY  - BOOK
AU  - Nijssen,G.M.
AU  - Halpin, T. A.
TI  - Conceptual schema and relational database design: a fact oriented approach 
SN  - 9031672630
PY  - 1989///
CY  - New York
PB  - Prentice-Hall
KW  - Database design
KW  - Relational databases
ER  -