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XML documents must contain the root element. This element is the parent element of all other elements.
The elements in an XML document form a document tree. The tree starts at the root and expands to the very bottom of the tree.
All elements can have child elements:
<root> <child> <subchild>.....</subchild> </child> </root>
The above image represents a book in the following XML:
<bookstore> <book category="COOKING"> <title lang="en">Everyday Italian</title> <author>Giada De Laurentiis</author> <year>2005</year> <price>30.00</price> </book> <book category="CHILDREN"> <title lang="en">Harry Potter</title> <author>J K. Rowling</author> <year>2005</year> <price>29.99</price> </book> <book category="WEB"> <title lang="en">Learning XML</title> <author>Erik T. Ray</author> <year>2003</year> <price>39.95</price> </book> </bookstore>
In the example The root element is
The
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