XML documents must contain a root element. All other elements must be nested within the root element.
All elements can have sub (children) elements. Elements with sub elements are also called Nodes.
<root>
….. <child>
………. <subchild>
………. </subchild>
….. </child>
</root>
A XML document should always have a XML declaration included. It defines the XML version and the character encoding used in the document.
<?xml version=
"1.0"encoding="utf-8"?>
Unlike HTML, XML tags are case sensitive. E.g., the Tag <Root> is different from the Tag <root>
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