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The 7 Fallacies of XML Validation
A recent thread on the XML-DEV list discussed various fallacies and myths regarding XML validation, including a few that might surprise the casual reader or user of XML and schema, such as #1: the "Fallacy of THE Schema", the idea that there is only one schema you validate against.
The Fallacies of Validation:
- Fallacy of "THE Schema": The idea that there is only one schema that you validate against.
- Fallacy of Schema Locality: Considering that validation only takes place at the entry points to your system
- Fallacy of Requisite Validation: Failing to recognize that sometimes validation creates arbitrary constraints that could--and should--be permitted anyway
- Fallacy of Validation as a Pass/Fail Operation: That validation should somehow be reduced to either a "true" or "false" result.
- Fallacy of a Universal Validation Language: The concept that there should be one validation language to rule them all, one validation language to bind them, one validation language to bind them all and in the darkness rule them
- Fallacy of Closed System Validation: "Systems leak. There's no such thing as a closed system."
- Fallacy that Validation is Exclusively for Constraint Checking: that validation is just for determining pass/fail results of input
For the meat of the text behind these fallacies, visit the XML-Dev list archives, and weigh in with your viewpoints. Are there more fallacies missing from the list?
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