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Joe Pluta wrote:
You say you want to implement triggers to make it easy to update data
errors without making more data errors. I ask you: if you had triggers,
how did you get data errors? If the triggers allowed the data errors in
the first place, then they will allow more! So why do you have the
triggers?
The point of the trigger is to avoid the data errors. If the triggers
are not there, then the data can contain errors. The triggers are put
in place to prevent the data errors.
If you are relying entirely on system security and an io module to
enforce your business rules, then someone with sufficient authority CAN
casually violate the business rules by updating the data directly. A
trigger prevents that by enforcing the business rules when the data is
updated ... regardless of how it's updated.
Yes, that same person could (theoretically) remove the trigger and
perform the update ... but that's not a casual operation.
david
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