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Wisdom of XML

If you are developer or if you are using web-service,then you must know the XML and it's wisdom.
There are some questions about XML and related to it such as what is meant by XML,Why we are using it? Or Are we using it?What is XSLT/XSL?How to Decorate XML? Or Can we Decorate XML?What is alternative to XMl?Or is any Alternative to it?

Now i am going to buke all these questions...
XML means Extensible Markup Language and it is used to store and transfer TEXT data. Remenber Text data only.It is simple and human readable format.
Example:
<blog>
         <name>oomph</name>
        <surname>fortuity</surname>
</blog>

XSL means Extensible Style sheet Language for XML.It like CSS in HTML.
Example:
<xsl:stylesheet>
   <xsl:template match="/blog/">
       <html>
            <body>    

                <table border="1">
                     <tr bgcolor="#9acd32">
                         <th>><xsl:value-of select="name"/></th>
                        <th>><xsl:value-of select="surname"/></</th>
                     </tr>

               </table>
            </body>
          </html>

    </xsl:template>
</xsl:stylesheet>

XSLT means XSL Transformations. It used to add/remove element, attribute, rearrange,sort,perform test, decision.
XSLT is used to transform an XML document into another XML document.
XSLT uses XPath to navigate.
XSL-FO is for formatting XML.Then you will think that XSL does same.So,without dout both are same.

XSL-FO stands for Extensible style sheet Language Formatting Objects. It formats XML to paper or other media.
XSL-FO(XSL) and XSL help each other.

Sources:
http://www.w3.org/

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