> I shall try.
>
> First an example of a business rule:
>
> A Level 1 manager has a maximum signature
> authority of $10K.
>
>
> An auto loan applicant, living in Ohio, is
> underage if he/she is under 18 years of age.
>
> If a customer has no outstanding invoices,
> then the customer is of preferred status.
>
I agree those are business rules and are best kept out of a schema.
What's more difficult are rules like "Every branch of the bank has a branch
manager" - that's on the borderline between structural rules and business
rules.
Regards,
Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
