- In regards of XSD schema enforcing key uniqueness: use the
xs:unique
element. More info in Enforcing Association Cardinality article, and take a look at the provided example XSD; - XML schema validation in Perl can be achieved using XML::Compile module, which wraps itself around XML::LibXML.
How do I defined unique constraint in xsd ? How can I achive error validation using xml-libxml?
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06-12-2021 - |
Question
With reference to topic, Perl, LibXML and Schemas
If I want to make the isbn tag to be an unique constraint, then what will be the change required in XSD. In addition to this, if I want to add validations for unique constraint using XML::LibXml, can I achieve the validations check using the same code? Can someone please explain with sample example with error in xml doc for unique constraint?
Solution
OTHER TIPS
xsd allows the amount of an item could appear, add this to your isbn element xsd declaration
minOccurs="0" maxOccurs="1"
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