Re: delete cascade

From: paul c <toledobythesea_at_oohay.ac>
Date: Mon, 23 Apr 2007 21:47:16 GMT
Message-ID: <EP9Xh.118822$DE1.53489@pd7urf2no>

Bob Badour wrote:
> paul c wrote:

...

>>> I mention it because it would fully disclose the data to be deleted, 
>>> which is the invoice and the associated items.
>>
>>
>> I can see that it would fully enclose, ie., enclose in one relation, 
>> but not sure how it would disclose any more fully than two selections 
>> and a join.
>>
>> Not trying to be picky but I found your view suggestion to be profound 
>> and want to make sure I understand this one.

>
>
> I didn't refer to two selects and a join so I find your comment
> confusing. I was discussing a single delete that deletes both just as an
> "on delete cascade" trigger would delete both.

I had an example like this in mind:

V = (invoices where invoice# = 99) <AND> (items where invoice# = 99); DELETE V; p Received on Mon Apr 23 2007 - 16:47:16 CDT