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Connecting to multiple databases through model via fetch specification problems.
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Connecting to multiple databases through model via fetch specification problems.


  • Subject: Connecting to multiple databases through model via fetch specification problems.
  • From: Olav Anderson <email@hidden>
  • Date: Sun, 19 Dec 2004 18:03:12 -0800

Hi,

Has anyone successfully resolved queries via EOModels across multiple databases using fetchspecifiations?

I have two databases and two models with relationships defined to fetch data from the second database when a relationship is resolved.

e.g.

TPS DB			TPSStorageDB
-----------			--------------------
TPSReport 	-> 	TPSChannel


Running the WO app it has no problem resolving the relationship across the databases via normal kvc, I can get all the TPSChannels from the TPSStorageDB for the TPSReport no problem.


The problem occurs when I construct a fetch specification or do a rawRows fetch I get an error expression failed semantic error table TPSReport does not exist when I want to find all the TPSReports for a TPSChannel.

I've constructed the fetch specifications through the EOModel GUI, programatically, every way possible.

I was wondering if anyone has had success with this over and above the vanilla resolving of relationships through key path/faults?

As soon as I combine the databases into one database all the problems go away, of course, but, I would like to split the data into distinct databases if possible and have been looking into this for a while to see if I am missing something obvious but, now I am at a loss.


Any ideas?


Thanks,

Olav

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