Using W3C XML Schema
W3C XML Schema forms the backbone of validation in InfoPath 2003. Whichever type of data source you choose when designing a form template, InfoPath will use a pre-existing W3C XML Schema document, create a W3C XML Schema document by interpreting the permitted structure of a database or XML Web service, or attempt to create a W3C XML Schema document from an example XML document.
One of the advantages of W3C XML Schema as a validation technology is that it can be used unchanged on both the client side and the server side. Therefore, the amount of work required to ensure that the client-side and server-side validation follow identical logic is significantly reduced when compared to HTML forms, where the language used on the ...
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