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How do applications process documents that use XML namespaces?

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Applications process documents that use XML namespaces in almost exactly the same way they process documents that don't use XML namespaces. For example, if a namespace-unaware application adds a new sales order to a database when it encounters a SalesOrder element, the equivalent namespace-aware application does the same. The only difference is that the namespace-aware application:
* Might need to check for xmlns attributes and parse qualified names. Whether it does this depends on whether such processing is already done by lower-level software, such as a namespace-aware DOM implementation.
* Uses universal (two-part) names instead of local (one-part) names. For example, the namespace-aware application might add a new sales order in response to an {http://www.google.com/ito/sales}SalesOrder element instead of a SalesOrder element.

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