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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
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 <mE27d.12084$XC.1409@trndny08>
Subject: Re: GWindows Database time type
Date: Thu, 30 Sep 2004 22:04:11 -0500
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Date: 2004-09-30T22:04:11-05:00
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"stephane richard" <stephane.richard@verizon.net> wrote in message
news:mE27d.12084$XC.1409@trndny08...
>
> "Stephen Leake" <stephen_leake@acm.org> wrote in message
> news:mailman.142.1096592260.390.comp.lang.ada@ada-france.org...
> >
> > Well, I still don't see why the design of GWindows.Calendar should be
> > at all influenced by databases; let's keep things orthogonal as much
> > as possible.
> >
> > --
> > -- Stephe
> >
>
> I agree here totally with Stephen Leake.  I think GWindows.Calendar should
> be influenced neither by databases nor by Operating Systems either.
>
> There is a date representation standard, ISO-8601, which can be read here
> http://www.mcs.vuw.ac.nz/technical/software/SGML/doc/iso8601/ISO8601.html
as
> well as other places on the web.  Perhaps it could be based on this
standard
> instead?

One obvious point is that you should determine what operations are needed
that are not provided by the standard. Remember that Ada 2005 includes
additional date/time operations for time zones, arithmetic, and formatting,
so it doesn't make much sense to re-invent the wheel in those areas. It also
expands the range of years upwards.

What's missing there (more advanced time zones, fancy date and time output)
probably can be built on top of those packages better and quicker than
starting from scratch.

                       Randy.