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Subject: Re: Relationships and referential integrity
Author: "Garrett Fitzgerald"
Posted: 2008/05/30 13:16:40
 
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That scares me on general principles. I think it would be much better to
write application logic to check if there are lines left: after all, you
could be deleting records and adding new ones, right?

But you could probably do that with a Delete Trigger on the child table if
you really had to.

On Fri, May 30, 2008 at 12:54 PM, John J. Mihaljevic <
john.mihaljevic .at. gmail DO.T com> wrote:

> Hi all,
>
> In a one-to-many relationship, I can easily see how to automatically delete
> any child records when the corresponding parent record is deleted. But how
> is this done in reverse? When the final child record of a relationship is
> deleted, can the parent record automatically be deleted in some way? The
> example I'm using is an order. When the final detail line of the order is
> completed (and the record is deleted from the OrderDetail table), I'd like
> the order header to automatically be deleted from the OrderHeader table.
>


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©2008 Garrett Fitzgerald
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