I have a table of countries.
I have another table whose fields contain excluded countries. The
number of countries that can be excluded is arbitrary, which means that
I have a table that looks like this:
Visitor
Excluded Country 1
Excluded Country 2
Excluded Country 3
Excluded Country 4
Excluded Country 5
....
Excluded Country 25
I'm hoping I don't have to go above 25, but that isn't unreasonable.
Also since most visitors only have one or two exclusions, there seems
to be a lot of waste, and I need a null entry in the countries table.
I would rather have a single field with an arbitrarily sized set of
countries, but I want to ensure that the countries chosen are from the
countries table. Up to now I have been using pick-lists. Any ideas
how I can create a set of countries in a single field using a
pick-list?
Cheers,
hatcat