XML and ADO.NET
If the XML data instance conforms to the DTD, the document is said to be:

an HTML document.
type-invalid.
not-type-valid.
type-valid.

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XML and ADO.NET
XML is:

a subset of SGML only.
All of these
a standardized yet customizable way to describe the content of documents only.
a hybrid of document processing and database processing only.

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