What is a ZEMIS number format in my Aufenthaltsbewilligung?

Visas, Permits, Passports and Naturalization
1
On the back of my card there is a number like

12345678.9 (ZH1234567)

Which part of this is ZEMIS? I think the last part is kanton reference.

2
Yes, you are correct though you could just give them a copy of the back