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At 03:01 PM 5/13/2002 -0400, Simon St.Laurent wrote: >On Mon, 2002-05-13 at 14:37, Jonathan Robie wrote: > > That's fine as long as all the programs that touch the data know how it > was > > originally intended to be used and treat it correctly. Instead of using a > > data type, you can now look at your DTD or Schema to see if someone left a > > comment to tell you whether a date is in MMDDYYYY format or DDMMYYYY > > format, and then look at all the programs that touch that data to make > sure > > that they interpreted the bytes correctly. > >Or you can use tools like Regular Fragmentations to break the lexical >parts down into markup-identifiable and unambiguous day/month/year >elements. Or you could use a regular expression to do the same thing, and associate the type with a name that identifies the regular expression to be used. And allow other constraints, such as ranges, to be associated with the name. Ooops, I just reinvented XML Schema simple types. Jonathan
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