On Fri, 2007-06-01 at 22:13 -0500, Ron Johnson wrote:
> On 06/01/07 19:29, Jeff Davis wrote:
> [snip]
> > You shouldn't use a volatile function in a check constraint. Use a
> > trigger instead, but even that is unlikely to work for enforcing
> > constraints correctly.
> >
> > In general, for partitioning, you have to make some sacrifices. It's
> > very challenging (and/or expensive) to ensure uniqueness across
> > partitions.
>
> Are partitioned databases the same as federated databases?
>
I think that usually people refer to a table that is split to be
partitioned (whether across servers or within a single server). I think
federated databases are where various parts of the database are split
across servers, but tables may be intact.
That's my own understanding of the terminology.
Regards,
Jeff Davis