I apologize if this posting is not specific to Perl usage, but I'm
doing some research on "standards" for handling unknown date values
(e.g, when a complete date is not known). I work in an industry niche
(cancer registry and public health data collection) that does not
follow ISO 8601 for electronic display of dates in YYYY-MM-DD form.
This industry niche has a unique business rule that applies a value
of '99' for an unknown month of day and a value of '9999' for an
unknown year.
I would like to learn of other nuances for handling unknown date
values in other industry niches. Please feel free to email me your
examples directly. Thank you.
Ken Hill
email: [EMAIL PROTECTED]
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