How to properly generate Debian sources.list?

Question

Debian

Can you tell if these lines are the same?

deb http://deb.debian.org/debian-security buster/updates main contrib non-free

deb http://security.debian.org/debian-security buster/updates main contrib non-free

I understand correctly that this is the repository itself:

deb http://deb.debian.org/debian/ buster main contrib non-free
deb-src http://deb.debian.org/debian/ buster main contrib non-free

These are the security updates:

deb http://security.debian.org/debian-security buster/updates main
deb-src http://security.debian.org/debian-security buster/updates main

And these are the updates:

deb http://deb.debian.org/debian/ buster-updates main contrib non-free
deb-src http://deb.debian.org/debian/ buster-updates main contrib non-free

As a result, the file should look something like this:

deb http://deb.debian.org/debian/ buster main contrib non-free
deb-src http://deb.debian.org/debian/ buster main contrib non-free

deb http://security.debian.org/debian-security buster/updates main
deb-src http://security.debian.org/debian-security buster/updates main

deb http://deb.debian.org/debian/ buster-updates main contrib non-free
deb-src http://deb.debian.org/debian/ buster-updates main contrib non-free

Answer 1

answered here