Topic: Error: NOT NULL constraint failed: A.id_B.
Hi everyone,
in a database I created two tables of which one is a dictionary. In the first, the one that is not a dictionary, I created the relationship with that dictionary. I associated a combobox to the relationship, when I go to save I get this error: NOT NULL constraint failed: A.id_B.
I can not understand. I enclose a mini project that explains the question. Thank you all