xml-dev - XML Schema date syntax

[Lars Marius Garshol <larsga@garshol.priv.no>]

I have recently come across a case where one wants to make an XML
Schema for the interchange syntax for an existing standard based on
relational databases.

This existing standard already has a lexical representation for its
dates, of the form CCYYMMDD. The question is, how can one make an XML
Schema data type for dates that have this lexical representation?

I see that XML Schema allows dates to have a pattern constraining
facet, the question is just how this will be interpreted by tools.
If the pattern were to be defined as 

 '[12][0-9][0-9][0-9][01][0-9][0-3][0-9]'

what would this mean? Would tools accept it?

--Lars M.