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Hello all, Ever since XML Schema started to evolve and the talk about datatypes in XML took off, I've been wondering secretly why XML validation needs the concept of datatypes at all. XML is a plain text format, so content validation in XML should be no different from regular pattern matching. Or why should it? A string of three digits may be numeric to an application, but stored or transmitted in XML, it's still just three characaters of plain text. If my application wants an integer, all I'd do would be to check if all characters are in the range 0-9. Regular expressions would be enough for that. If possible, I'd have this check written in the schema, or some special module of patterns attached to the schema. Gustaf
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