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Converting an XML file to a graph
shouldn't be too difficult. Actually, it's more like a tree. The XML tags are
the nodes of this tree. Their hierarchical order determines their seats on this
tree. Let's look at an example to clarify this point. Here is our mydvd.xml
description:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="mydvd.xsl"?>
<sales>
<summary>
<heading>MyDVD Rental Store</heading>
<subhead>Periodical Sales Report</subhead>
<description>Sales Report for January,
February, and March of 2001</description>
</summary>
<data>
<month>
<name>January 2001</name>
<week number="1" dvds_rented="12000" />
<week number="2" dvds_rented="15000" />
<week number="3" dvds_rented="18000" />
<week number="4" dvds_rented="11800" />
</month>
<month>
<name>February 2001</name>
<week number="1" dvds_rented="11500" />
<week number="2" dvds_rented="12390" />
<week number="3" dvds_rented="19050" />
<week number="4" dvds_rented="11200" />
</month>
<month>
<name>March 2001</name>
<week number="1" dvds_rented="15300" />
<week number="2" dvds_rented="12390" />
<week number="3" dvds_rented="10050" />
<week number="4" dvds_rented="11230" />
</month>
</data>
</sales>
Here is the tree representation of this document:

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