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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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is it reqire primary key and foreign key relation ship to join relational databases?if yes? explain..

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.

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is it reqire primary key and foreign key relation ship to join relational databases?if yes? explain..

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

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is it reqire primary key and foreign key relation ship to join relational databases?if yes? explain..

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.

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