All information collected through CIW’s secure online platform, CIW Online, feeds directly into CaSSI, along with information manually entered by CIW staff.
Caiff data eu casglu mewn ffurflen electronig a'u cyflwyno i Lywodraeth Cymru drwy DEWi, system drosglwyddo data ar-lein ddiogel a ddatblygwyd gan Lywodraeth Cymru.