Chapter 6 Normalization

...and decompose the table
Once we have identified such FD’s, we can
decompose the table by projecting it with the
FD’s.
For example, given the Person table with the
following FDs:
SSN → Name, Address and SSN → Hobby;
we can decompose the Person table via a projection
of the original table to the attributes
as associated to the FDs, which leads to the
following two smaller tables:
Person(SSN, Name, Address)
Hobby(SSN, Hobby)
Those two tables are lossless decomposition of
the original one, and moreover, they contain no
redundancy. We will see why a bit later.
20