Depends on the site intent is it mainly data oriented or is the
database just a minor component of the site design?

Mine are a lot of data management so I usually do these in this order:
- define the DB elements I need first (will come back if I need to
adjust)
- work out the user pages that will be needed.
- From there I fill back with support code: form processing,
validation and DB access, reports, etc. Usually entry and validation
then once I can get data in well I then go to reports and added
features.

Sometimes when I am stuck I may start with the user screens first, as
that is what makes or breaks a lot of my programs - how it works for
the user.

Just ask yourself 'what will give me the most of what I need to get
going?' Data structures? User screens? start there. Also starting
anywhere instead of worrying about it helps a lot too. :-)

Larry