C, pk = id
it's okay? although i have 3 same pk
So for forming relation will u have same values for all ids... Example... 2 in table A, 2 in B and 2 in C...???
No problem
You add foreign Key to all table Table A pk=id; Table B pk=id, fk=a_id; .... If you don't have this, you search columns in a table have same definition to do the relation.
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