A data base of research articles in a journal uses the following schema.
(VOLUME, NUMBER, STARTPAGE, ENDPAGE, TITLE, YEAR, PRICE)
The primary key is(VOLUME, NUMBER, STARTPAGE, ENDPAGE) and the following functional dependencies exist in the schema.
(VOLUME, NUMBER, STARTPAGE, ENDPAGE) ! TITLE
(VOLUME, NUMBER) ! YEAR
(VOLUME, NUMBER, STARTPAGE, ENDPAGE) ! PRICE
The data base is redesigned to use the following schemas.
(VOLUME, NUMBER, STARTPAGE, ENDPAGE, TITLE, PRICE)
(VOLUME, NUMBER, YEAR)
Which is the weakest normal form that the new data base satisfies, but the old one does not?1
1NF
2
2NF
3
3NF
4
BCNF