I'm using arc gis 10.2.1. Is there a programmatic way to change a relationship from 1-1 to 1-M? I found the interface IRelClassSchemaEdit, which allows me to change the labels on the relationship, but not the cardinality. I don't want to have to drop the relationship in arc catalog and recreate if there's a programmatic way to change it, either in c# or in python.
Solved! Go to Solution.