Andrej Ricnik-Bay wrote:
> On 23/01/2008, Andreas <maps.on@gmx.net> wrote:
>
>> My view should look like this:
>> id, name, addons
>> ...
>> 11, 'Salami', 'Cheese, Salami'
>> 42, 'Fire', 'Cheese, Onion, Salami, Extra hot chilies'
>> ...
>>
> Looks primarily like a normalisation problem to me. I'd be
> going for a pizzaname-table, an ingredient-table and a pizza-table
> that combines these m:n and then worry about the view ...
>
The pizza-table was a rather simplified example.
The real table is a questinnaire that has a number of single fields and
some distinct groups of booleans.
For easy reading some of those boolean-groups should be rolled into one
text field each but additionally every boolean should still appear as
single column, too.
It wasn't my idea. I just do the dirty work. ;)
Further normalisation would run me into crosstab issues and this is also
a white spot for me.
Could you give me a sketch how a good design would represent such a
questinnaire?
I understand the m:n approach.
My problem would rather be how to get a big view out of this m:n design.
The current design also is ambiguous in the aspect that the frontend-app
just knows boolean as Yes/No so TRUE=Yes but FALSE could be No as well
as Unknown.
Regards
Andreas