XML and ADO.NET
If an XML document does not have a DTD, then by definition it is:

type-valid.
not-type-valid.
an HTML document.
None of these

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XML and ADO.NET
XML is:

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

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