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Follow the basic steps in this section to write Java programs that use the In LAX mode, you can validate parts of the XML content of an instance document without validating the whole document.A LAX parser indicates that the processor should perform validation for elements in the instance document that are declared in an associated XML schema.This is the reason why (most of the) XML parser implementations do not support XML Namespaces by default, to handle the validation of XML documents with namespaces correctly it is therefore necessary to configure the underlying parsers to provide support for XML Namespaces.

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The input document contains an extra attribute which has not been defined in the XML Schema, this shows that the XML Schema has been used for the validation.

When using this XML Schema to validate the input XML document, the following error gets reported: ) as defined below has been used in the code examples to validate the input document.

Note the following aspects of parsers that perform schema validation: The XML Schema language includes most of the capabilities of the DTD specification.

An XML schema serves a similar purpose to a DTD, but is more flexible in specifying document constraints.

Table 7-1 compares some of the features between the two validation mechanisms.

Last modified 19-Dec-2019 05:52