> At the end of the first arcticle Bill Todd writes, that "At this writing
> Inprise's InterBase is ... the only one to use the versioning model".
> Is it true? Does anybody know if MS SQL Server is using versioning model
> or not?

No it doesn't.
Oracle has some versioning support but it requires logging to be turned on,
and isn't infinite.All in all a bit of a hack, to provide a tick box for
marketing.
Mimer has support for versioning as I think does Solid.
Other than that I don't know of any other database that has any versioning
pretensions.

Regards
Paul