Elements, Attributes, and Values : Introduction « Introduction « XML Tutorial

1. XML Tutorial
2. Introduction
3. Introduction

XML uses the same building blocks that HTML does: elements, attributes, and values. 
An XML element is the most basic unit of your document. 
An XML element can contain other elements and text. 
An element has an opening tag with a name ( written between < and > ) and sometimes attributes. 
The name should describe the element's purpose. 
XML is self-describing 

<name> 
    <first>Bond</first> 
    <last>James</last> 
</name> 

Hierarchies in XML 

<name> 
    <first>Bond</first>
    <middle>JK</middle>
    <last>James</last>
</name> 

<name> is parent of <first>, <middle> and <last>.
<first>, <middle> and <last> are sibling.
Text is a child of the element. 
The text Bond is a child of <first>. 


<name> 
    <first>Bond</first>
    <middle>JK</middle>
    <last>James</last>
</name> 


<name> element has only other elements, and not text, then it is said to have element content. 
<first>, <middle>, and <last> have only text as children, they are said to have simple content. 


Elements can contain both text and other elements(mixed content)

<doc> 
    <parent>this is some <em>text</em> in my element</parent> 
</doc> 


<parent>has three children: 
A text child containing the text 'this is some' and an <em>child.
Another text child containing the text inmyelement.