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Forcing a row to be related to at least another row


Forcing a row to be related to at least another row

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lordzoster
lordzoster
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Hallo
I need to implement this:
A row in table A must be in relationship with at least one row in table B.

Could this be achieved by constraints only?

Thanks in advance



Evil Kraig F
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This sounds like a homework question. What you want is Foreign Keys and Relational Integrity. Use those as your keywords for google and you'll find what you're looking for.


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lordzoster
lordzoster
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Hallo Craig.
It's not so easy, thank you anyway.



Kingston Dhasian
Kingston Dhasian
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lordzoster (6/7/2013)
Hallo Craig.
It's not so easy, thank you anyway.


Why do you think it is not so easy? Applying referential integrity is not so difficult either.
Can you explain us the situation in a bit more detail?

We like to solve challenging questions.


Kingston Dhasian

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