I have a fact table with 2 dimensions:
Each record contains the amount of active users from a specific cohort at a particular date - typical structure for the cohort analysis.
Currently, a cohort is defined as a group of users signed up at the same date. I would like to start additionally storing the same data, but with a bit different definition of the cohort - a group of users with the first order at the same date.
I have a conceptual dilemma: is it better to create a new fact table with the same structure or to add a new dimension (cohort_type_id) to the existing fact table?