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is it reqire primary key and foreign key relation ship to
join relational databases?if yes? explain?
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Answer / mike
If you are performing the join using a SOURCE QUALIFIER ,
the relational sources should have a primary and foreign
key relationship.
If you are performing the join using a JOINER, no need to
have a primary and foreign key relationship.
| Is This Answer Correct ? | 10 Yes | 5 No |
Answer / usha
we want join in SQ we should have primary key and foreign
key relation ship ...
but, in joiner we dont need primary key and foreign key
relation ship
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / bharu_295
if u want to join the tables we need to have primary and foreign key relationship other wise if we join we get Cartesian product of the data.
| Is This Answer Correct ? | 1 Yes | 2 No |
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