Try this first. The DeltaXML Core Features is an interactive demo which shows the features of DeltaXML Core, and you can test them yourself.
The DeltaXMLCore sandbox is an interactive demo which shows the delta between two inputs, it is updated as you type!
If you wish to see more of the power of DeltaXML and use it to control the data in your XML delta file then why not try our Comparison Service. This allows you to try out various types of comparison on your down data, via file-upload or URL access.
This interactive demo using a graphic of a tiger shows you both the power of DeltaXML Core and our add-on product DeltaXML Sync. Please see our SVG demo pages.