>> I know this one. It can be empty, which a singleton cannot be. For a
>> singleton table, you should have one and only one row, you cannot insert or
>> delete, so this is only part of the real thing.
>
> Surely we can do a bit better than that, if that's what you really want.
> Create the table with an initial row and add a trigger preventing anything
> except update.
Yes.
I just meant that this is not available easily "out of the box", but it is
obviously doable with some effort... which people would seldom do.
--
Fabien.
