Re: sql table referential integrity

On Jan 30, 2020, at 11:39 PM, Birgitta Hauser <Hauser@xxxxxxxxxxxxxxx> wrote:

What is identical in both files? The value in the Identity Columns or the
compound key (key1, Key2)?

Mit freundlichen Grüßen / Best regards

Birgitta Hauser


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-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Jay
Vaughn
Sent: Donnerstag, 30. Januar 2020 22:40
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: sql table referential integrity

So i have table A (keyed by identity column), and index A (keyed by key1,
key2).

I have table B (keyed by identity column) and index B (keyed by key1, key2
- same defined keys as in index A)

table B is really just an "additional information" table for the rows and
keys defined in table A.

How can I apply some kind of referential integrity over table B to allow
table B keyed rows to be deleted if table A similar keyed rows are deleted?
Likewise if table A key value changes, table B key values change.

I know I am probably dreaming. I just don't want to go handle this stuff
programmatically.

tia

Jay
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