At 3/3/2003 05:07 PM, Alexander V.Nevsky <ded@...> wrote:

> Bob, since it difficult to imagine users will be
>added/dropped/modified to another ones in time of their work it is
>safe to check it without references integrity - concurrency is near to
>impossible and you need only one unique index on table Users not
>low-selective one on every table on user_id.

Very good point, Alexander. That's exactly what I've decided to do.

Thank you,

Bob M..