I have tables Events and Visitors with relation many-to-many. I had such error: Unable to update the EntitySet 'Events_has_Visitors' because it has a
DefiningQuery and no <InsertFunction> element exists in the
<ModificationFunctionMapping> element to support the current
I found similar problem at the Weblog of Ken Cox but it doesn't solve my problem. When I set primary key at Events_has_Visitors table and update Entity Model for some reason relation becomes 0..1 to *, but if I'll delete primary key - relation will become many-to-many again. But still doesn't work.
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