Web Data Management
In XML

there is no internal type of DTD
there is no external type of DTD
the external DTD subset is read before the internal DTD
the internal DTD subset is read before the external DTD

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Web Data Management
Valid XML document means (most appropriate) ?

the XML document has DTD associated with it & it complies with that DTD
Each element must nest inside any enclosing element property
the document contains atleast one or more root element
the document has root element

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