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Data models are useful at design time when you are working
with XML data for forms and Guides that are based on data models.
Model-based forms and Guides require XML data that is structured
according to the same data model:
To populate the form or Guide, you provide XML data that
is structured accordingly.
When you save form or Guide data in an XML variable, the
data model dictates the XML structure.
You use the Set Value
service to access data in XML variables. Data models can be imported
into XML variables so that the model structure is displayed in XPath
builder. In XPath Builder, seeing the model structure simplifies
the creation of XPath expressions that you use to access the data.
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