Re: Premenos and the date data type window.

[PaulMmn <PaulMmn@xxxxxxxxxxxxx>]

>Chris:
>>
>>
>>> Date windows of 1940-2039, 1970-2069, or any other fixed window are
>>>used by
>>> those who do not care if their code dies in the future.  I hope I am alive
>>> in the year 2039 to see how IBM explains why we have to go through this
>>>Y2K
>>> thing a second time in the same century.
>>
>>Don't you think they will probably just roll the window forward? I would
>>suspect that this would be a workable solution since the IBM conversions
>>are "black box".
>>
>Part of the problem is *LOVAL is D'01/01/40' and *HIVAL is '12/31/39' for
>dates with 2 digit years.
>
>
>Charlie Massoglia, Massoglia Technical Consulting, Inc.


Another problem with rolling windows is that people live long enough to
foul up the windows!  I have an aunt who was born ca. 1904.  My parents
were born in the 20s.  I was born in 1950, and plan to see 2050.  Any
rolling window starts causing problems when you look at spans of human
lifetime approaching a century or more.

An organization I worked with has membership records going back close to 80
years.  I had to deal with the 1800-1900 boundary for birthdays of people
who were members that long ago.  A rolling window is NOT a solution, just a
bandaid.

--Paul E Musselman
PaulMmn@ix.netcom.com


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