Re: Need some help on Normalization
Date: Sat, 11 Oct 2008 23:41:52 -0700 (PDT)
On Oct 10, 2:01 pm, Lollie <techtechx..._at_gmail.com> wrote:
> You identify the following attributes, in part, for the Employee
> Employee number (Primary key)
> Full name
> Phone number
> Supervisor number
> What change should you make to ensure that the entity is normalized to
> the 1st normal form (1NF)?
> A) Separate the full name into first, middle (optional), and last
> B) Use a different primary key value.
> C) Move the supervisor to a different table.
> D) Separate the phone number into separate fields.
> I see the table as looking like this:
> *Emp # (PK) Full name Phone# Supervisor#*
> 123 Joe Smith 123-4567 1
> 888 John Doe 555-1212 2
> 316 Jack Pi 888-8080 1
> 451 Suzy Q 457-7410 3
> Anybody have any comments? Thanks is advance - is there an answer
The question of how to normalise middle names is asking for trouble. What about people with with two or more middle names? That and the fact that they're optional (not to mention people with only one name) suggests PERSON NAME is a separate entity in a one to one or many relationship. Whether that is practical in a real-life database is another question. Received on Sun Oct 12 2008 - 01:41:52 CDT