Web Data Management
For which of theses the XQuery can't be used ?

Transform XML data to XHTML
Generate summary reports
Search Web documents for relevant information
None of these

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

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

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