To upload images and store the file name in the database, you will need to use the File manipulation functions of Universal Email.
There is a tutorial on the DataAssist support page for "How to apply Digital File Pro to DataAssist Insert and Update pages"
that walks through this.
It was written for the Older Digital File Pro extension that is now Universal Email
the only difference is where to access the Upload File Server behavior.
it is now at Insert -> WebAssist -> File Manipulation -> Upload