There are two tables Table A and Table B. Table A has a primary key and Table B has a foreign key constraint on the primary key of Table A.

Now how would you handle the following:-

[Case 1] update to data in primary key in Table A, consider this will violate foreign key constraint with child table

"; ; ; ; [Case 2] update to data in foreing key in Table B, consider this will violate foreign key constraint with parent table