Good point, so he may
(1) Make copy of DB for developer to make changes later.
(2) Split DB
(3) Maybe encrypt
(4) Lockdown DB nav and ribbon controls, and disable shift key (however, still circumventable with one method)
(5) Make the frontend an executable "*.accde" instead of what it is "*.accdb"
There is more like setting close functions if things are accessed out of order and so forth but another discussion itself.