[How to change a composite key?]

I am sending the model to you can see what I want to do...

Thanks

[How to change a composite key?]

Hi,

I have three tables: A, B and AB and the key of table AB is a composite key of table A and table B.
How can I change an composite key between two tables?

I tried with tMap, but I need to link the key that I want to change, then I can't indicate what key will be the new value...

Thanks a lot