Re: [Tzdist] Fwd: [tzdist] #32 (service): managing historical data

[Cyrus Daboo <[e-mail]>]

Hi Daniel,

--On December 16, 2014 at 8:12:40 PM +0100 Daniel Migault 
<[e-mail]> wrote:

> I am thus inclined to have a mandatory version number. Although there are
> alternative ways to do/think. I would like to see if there are any strong
> opposition to this. Please send you opinion. I wish we find consensus
> by/during the phone call.

As I proposed before I want to see the version number be part of the 
meta-data associated with the time zone data - i.e., part of the list 
action response. I don't want to see it in the time zone data due to the 
fact that, with the current manner in which IANA tz data is "tagged" with a 
version, the entire set of time zones would be marked as changed.

I believe providing that information as meta-data is the right thing to do 
and gives clients/applications/protocols all the information they need to 
manage version discrepancies if that is something that is an issue for 
them. That does not preclude the possibility of using version ids that the 
publisher attaches to time zone data in the time zone data itself, if the 
publisher chooses to do that.

As for how the version information is stored and used - that should be left 
solely up to the applications using the time zone data.

-- 
Cyrus Daboo