Hi Tamara,
Great having you here.
You are right, at this point you can only upload images without coding to the database. You can upload documents, and get to them, but you cannot enter the reference to the document to the DB without code.
Having said that, we are working on adding the support for no coding document upload to the DB.
As for where you can see uploaded images and documents, in the upload button settings there is a button on the top - I think it is called uploaded images / documents (or something very). Using this button you get access to any uploaded file, regardless of the database.