On 28/07/14 16:40, Patrice Scattolin wrote:
Remember that if we remove historical transitions that are problematic, what we are actually doing is replacing them with a lack of transition. The database will still give an answer for these historical date/timezone combination. It may well give an answer that is wrong more often than it does now. Before it might have had a transition date that is wrong, now it will not have any transitions at all. In the absolute, wouldn't that make more timezone with more dates that are wrong than is currently the case? If that's so, then isn't this a step backwards?
The problem currently is that prior to 1970 we have no idea if the data we were working with 5 years ago was changed because it was a new quess or changed because more accurate data is available. If content has been tagged using what is proven to be incorrect assumptions, then it can be reviewed and corrected with more accurate data. Simply changing assumptions without having real facts to work against is never a good way of working. LEAVE the data as it has been used until such time as a fact comes along that proves a change is necessary. But what is actually needed is a much more robust way of identifying just which historic facts are being used? -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk Rainbow Digital Media - http://rainbowdigitalmedia.co.uk