Re: EOModler and Multiple Primary Keys
Re: EOModler and Multiple Primary Keys
- Subject: Re: EOModler and Multiple Primary Keys
- From: Mark Morris <email@hidden>
- Date: Wed, 24 May 2006 13:03:57 -0500
Hello Owen,
Are you joining on both TopicID and TrackingObjectID? Since that is
the primary key of TopicName, you must use both to uniquely identify
a row to get a to-one relationship.
To join on more than one attribute in EOModeler.app, first join on
one attribute (click Connect), then the other (and click Connect).
That warning message is a good one, and usually indicates something
is actually configured incorrectly in your model.
Regards,
Mark
On May 23, 2006, at 9:28 PM, Owen McKerrow wrote:
Hi All
We are trying to create a EOModel of a 3rd party database which I
cannot change.
When modelling the relationship between SubTopicName and TopicName
and then trying to save
we get the following error
Relationship TopicName in entity SubTopicName is a to-one
relationship, but its destination
attribute(s) does not match the primary key of the destination entity.
We think we have a problem because of the multiple primary keys in
the tables for Topic and SubTopicName
Can anyone please help provide a solution to this problem?
Tables and Primary key information and schema is attached.
<EOModelerProblem.doc>
Owen McKerrow
WebMaster, emlab
Ph : +61 02 4221 5517
http://emlab.uow.edu.au
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