Database creation: field which asks the user to download a photo

I am trying to build a user friendly inventory database. Most of the fields I created were pretty straight forward but I am having trouble figuring this last field. I need the user to be able to upload a photo for each file created. Could someone help me with that please?

Duplicated of https://ask.libreoffice.org/en/question/272852/. Use this instance of the question.