I think so, I should have said that I'd googled the subject and got not a whole lot out of it, other than the blog below, Rob Squires research presentation from 2005 and a bunch of scientific articles. I already knew about slowly changing dimensions as well (in theory not practice) On Thu, Nov 6, 2008 at 10:20 AM, David Ballester <ballester.david@xxxxxxxxx>wrote: > > > 2008/11/6 Niall Litchfield <niall.litchfield@xxxxxxxxx> > > Nope, not a Star Trek - Voyager reference though it sounds like one, but >> something that our CEO was asked about by a customer. I have to confess to >> never having heard the term. Other than FlashBack Query/Data Archive has >> anyone any experience/understanding of this term as it relates to Oracle? >> >> -- >> Niall Litchfield >> Oracle DBA >> http://www.orawin.info >> > > > > Hi Niall: > > > May be is referening to this? ( googling by oracle temporal databases ) > > http://www.rittmanmead.com/2005/10/21/temporal-databases/ > > Regards > > D. > -- Niall Litchfield Oracle DBA http://www.orawin.info