--- In ib-support@y..., Helen Borrie <helebor@d...> wrote:

> You will have to apply a unique constraint across the

columns of the existing key to ensure that the data itself obeys the
requirement for uniqueness.

>

Hi, Helen. I prefer general indexes for 2 reasons:
1. I can rebuild them making inactive/active.
2. They are comfortable when explicitly planning inner joins.

Best regards.