Recommended practice for managing decision table answer history

Hello Community - 

I'm struggling a bit with how to proceed and looking to see if there is a better recommendation than where my mind keeps taking me.

For various Configuration Item types, we want to ask the CI owner a series of 8 questions to determine the compliance scope for that CI.  I've got the logic for the decision table built out and working as expected, but for audit and data certification purposes, I need to be able to keep a history of the information provided in those questions.

Is there a better to maintain this history & be able to do data certification on the information added than adding 8 new fields to the base cmdb_ci table?