Move photos/database to a different user/machine (linux)

ok, this is all on a debian/gnome machine using the latest digikam .appimage.

Currently my digikam setup is in :

/home/anna/Digikam/Database/*.db            <-- all digikam database files
/home/anna/Digikam/Pictures/                <-- all photo's are in here

I want to move it to a different account & machine:

/home/kathy/Documents/Digikam/Database/*.db
/home/kathy/Documents/Digikam/Pictures/

Anybody have a noob writeup how to do this correctly. grtz...