[Bucardo-general] private key vs. unique index

[Joshua Tolley]

On Fri, Apr 15, 2011 at 10:05:48AM -0400, Greg Sabino Mullane wrote:
> ...
> > 2) Bucardo keeps a table with the private key (only; not the whole
> > row) that needs to be replicated.
> > 
> > However, in the case where there's only a unique index instead of a
> > private key, does this create any potential problems, additional
> > overhead, etc.?
> 
> Nope, no problems. Matter of fact, a primary key is really just a 
> unique index with some fancy attribs on it, as far as Postgres 
> is concerned.

You might run into problems if you have NULL values in that unique key;
primary keys also enforce a NOT NULL constraint.

-- 
Josh Tolley   josh at endpoint.com   801-987-0252
End Point Corporation  http://www.endpoint.com
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