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Mandatory DD elements for relationships?

 
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Where in the specs I can find the mandatory elements to define in the DD for relationships?
 
alzamabar
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Found answer on the specs. The only mandatory fields for ejb-relation are:

ejb-relationship-role, ejb-relationship-role

And for ejb-relationship-role are:

multiplicity
relationship-role-source
ejb-name

The cmr-field element is not mandatory in case of unidirectional relationship
 
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