XML validation using mathematical expressions
Hello, I am new to this interest group and I have just familiarized myself with the XML basic concepts and schema validation so bear with me;-) So far, I have only got theoretical knowledge gained by reading articles, tutorials (I found Roger Costello's schema tutorial and best practice guide really useful) and XML books. I have learned that you can put a lot of control over XML instance documents by properly typing and constraining elements in XML schemas. I have also learned that you can extend the schema by enforcing correlation constraints (A > B) by using other schema's such as Schematron based on XSLT templates. However, I'd like to take it a step further by introducing non-linear relationships between elements using mathematical expressions. For example, I would like to validate that element B < A/sqrt(2). I'd appreciate any help from the XML development community in achieving this. Would MathML be of any help? TIA Paul van Hagen
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