On Jun 24, 10:34=A0am, Hans Mayr <mayr1...@[EMAIL PROTECTED]
> wrote:
> Hello Thomas,
>
> Thanks for your mail. But you did exactly what I wanted to avoid, you
> argued about a system for articles, prices and currencies. They are
> just an example for the datastructure I have and which can not be
> changed in my context. Just imagine that a certain product is not
> always available and if it is not available there is no price. Thus,
> in the example, I need the valid_to and I need to check if there is a
> valid from, valid to period when I enter something in t_orders. One
> could solve that differently, too. I know. But given a datastructure
> like the one I described above, which I have seen in many places, how
> does one organize that?
>
> Best,
>
> Hans
Hans,
If you cannot change the model nor the structure, you may be left with
only one option.
That is a 'trigger option'.
HTH
Thomas
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