Hi !

IDS 11.50.FC6

I need to set up constraints between tables in different databases.
According to the documentation the tables used in a foreign key
definition must be in the same database.
I have also tried to use synonyms and views thar refers the table in
the other databas but no success.

One idea is to use ER to replicate the tables in question, another
would be to write triggers that does a check against synonyms.

Any other ideas anybody ?

TIA


Ulf

You can't do what you want unless you consider using a before insert trigger.
WARNING!

While you could in theory do this... you really don't want to do this.
It will kill your performance.

Depending on how static the data that is in the table that you're using as your constraint, you may want to consider replicating the data to the database and the you could use a simple foreign key constraint.

Also do you have a use case for this?
I can't think of any where you will want to constrain your data against anything which is outside of your data model. Note again, data models do notcross database borders. That's a no no.


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Using ER to replicate the independent table to the local server so you can
constrain against it is the only really viable idea. Unless you can
replicate it at the application level.


Art

Art S. Kagel
Advanced DataTools (www.advancedatatools.com)
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On Thu, May 6, 2010 at 6:54 AM, Ulf <ulf.akerberg (AT) gmail (DOT) com> wrote: