I need to create two tables, the user can edit the field (value) and this field is the same.
Table A
Segment
value
A
10
B
15
Table B
Segment
Product
value
A
P1
10
A
P2
10
B
P5
15
The default value from Table B is the same as Table A, but the user can edit the value in Table B because this table has another granularity (Product), when this happens the content from Table A can't change. If the user change values from P1 to 7, Segment A needs to stay with value 10, only P1 in Table B needs to update. If the user change value from the Segment in Table A the value in Table B needs to change except for P1.
