The 1NF is the simplest and the
only one
that does not depend
on the notion of
"functional dependency"
A relation is in
1NF (first normal form)
if:
every attribute of the relation has
atomic (single, not multi) values
Trivial Satisfaction....
The 1NF is an
empty definition , because
every attribute
in a relation in the
relational model
must have
atomic values
So
every relation is trivially in 1NF because by
definition
( click here),
each attribute in a relation must be atomic
(i.e., not compound and not multi-valued)
(The domain of an attribute must be a set of atomic values)