Interesting, Very interesting... In addition to the comments above I'd also take issue with your xml implementation.

<Product>

<ProductID>1</ProductID>

<ProductName>Chai</ProductName>

<CompanyName>Lehmanns Marktstand</CompanyName>

<ShippersName>Speedy Express</ShippersName>

<OrderDate>12/07/2013</OrderDate>

<UnitPrice>18.0000</UnitPrice>

<Quantity>40</Quantity>

<Discount>0.15</Discount>

</Product>

XML also supports attributes, If you use attributes, then you XML will be half the string size,

e.g. <Product ProductID="1" ProductName="Chai" />

Also you should have a user defined function to escape the four XML sequences

also you should alias the Attribute Names

e.g. <Prod ID="1" PN="Chai" /> shorter again....