Thread: When to use compound PK instead of a FK?

When to use compound PK instead of a FK?

From

"Jamie"

Date:

06 February 2007, 02:16:19

I typically use compound primary keys when creating a table that
represents a many-to-many relationship. I was wondering if anyone else
had other situations in which you would use a compound PK? Why do you
use it instead of just a foreign key?

Re: When to use compound PK instead of a FK?

From

Ron Johnson

Date:

06 February 2007, 04:30:28

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On 02/04/07 09:48, Jamie wrote:
> I typically use compound primary keys when creating a table that
> represents a many-to-many relationship. I was wondering if anyone else
> had other situations in which you would use a compound PK? Why do you
> use it instead of just a foreign key?

We use multi-segment PKs all the time.  Is that what you meant by
"compound PK"?
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