On the Data Assist Support page there is a how to article that walks through adding Digital File Pro to your data assist insert and update pages:
After adding File Upload to your form, a new binding group will be created named "WA Uploaded Files (Name of your file field)". expand this binding group, one of the bindings you will see is a binding for Server File Name, this binding can be used in the insert behavior to store the uploaded file name.
You have the upload behavior set to create 2 copies of the image. If you look closer, you will notice that the bindings are repeated, there will be a set of bindings for the large image, and another set of bindings for the thumbnail image.
In the insert and update pages, you will need to edit the insert and update behaviors to bind the image columns of your products table to the server file name bindings for the large or thumbnail images created by the file upload.
Thanks for taking the time to respond in the forums today, all your help is very much appreciated.