[ESW Wiki] Update of "its0506ReqConstraints" by fsasaki

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http://esw.w3.org/topic/its0506ReqConstraints


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  === Notes ===
  
- XSD (XML Schema Part 2: Datatypes Second Edition) provides a mechanism to define "Constraining Facets" http://www.w3.org/TR/xmlschema-2/#rf-facets that may provide some solution for this requirement, at least at the schema level.
+ XSD (XML Schema Part 2: Datatypes Second Edition) provides a mechanism to define "Constraining Facets" http://www.w3.org/TR/xmlschema-2/#rf-facets that may provide some solution for this requirement, at least at the schema level. '''[[FS-''' A proposal: Write not "at least at the schema level.", but "at the schema level. At the instance level, Schematron [http://www.schematron.com/] could be used for the same purpose."''']]'''
  
  Sometimes the constraint may need to be expressed using units different from the unit used in the document. For example, the maximum length of a string may need to be expressed in byte or pixels, or display cells instead of characters. This may lead to the need for quite a few parameters with the constraint (e.g. the encoding to use, or the font and point-size information, etc.)

Received on Wednesday, 15 June 2005 11:54:31 UTC