I have a table A with a composite primary key and I have table B where I need to have Table A’s colum(s) as foreign key. Do I need to add both column’s of Table A in Table B as foreign key?
Please suggest.
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I have a table A with a composite primary key and I have table B where I need to have Table A’s colum(s) as foreign key. Do I need to add both column’s of Table A in Table B as foreign key?
Please suggest.
Create a surrogate in table A to use as the primary key, and use the composite key columns as a superkey (create a unique, non-null index on the columns). Have the foreign key in table B refer to the surrogate column.