Web Data Management
For XML document to be valid ?

document validity has no relationship with well formedness
document need not to be well formed
document need to be well formed & valid
document need to be well formed also

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Web Data Management
The use of a DTD in XML development is ?

required when validating XML documents
used to direct conversion using an XSLT processor
no longer necessary after the XML editor has been customized
a good guide to populating a templates to be filled in when generating an XML document automatically

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

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

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