[Info-Ingres] String Manipulations

[Roy Hann]

"Gibson Jonathan" <Jonathan.Gibson at hiscox.com> wrote in message 
news:mailman.14.1174387162.20015.info-ingres at kettleriverconsulting.com...
> You've misinterpreted my comment about database performance.  I wouldn't
> want the database to handle a transient business rule such as a
> promotion that lasts for 2 months.
[snip]

I think such misinterpretations are inevitable if we don't first define what 
our words mean.  We are tossing around terms like "business rule", "business 
logic" and also incidentally introducing the concepts of constraint and 
process and workflow like maybe these are all the same kind of thing.

>From later posts it looks like Emile really means that "business rules" are 
just constraints that detect when you have attempted something the 
conceptual (business) model doesn't accommodate.   That's tough to argue 
against.  (It's also tough to argue for, if the database design itself is 
wrong or confused.)

Roy