In article <1141311212.487197.167020_at_t39g2000cwt.googlegroups.com>,
jog_at_cs.nott.ac.uk says...
> To me this highlights the difference between 1-NF and further
> normalization. The RM is based on a functional mapping of column names
> to values. If a relation is not in 1-NF its tuples cannot be modelled
> functionally, and this being the core of RM, it is definitional as
> opposed to just mere convenience.
The functional mapping is retained if you accept that a relation value
can be considered a (single) value.
--
Jon
Received on Thu Mar 02 2006 - 10:14:19 CST
