I'm building a dw that stores natural disaster data. I'm working on the Inspection piece now and the trouble I'm having is this.
Different kinds of inspections were done on houses, each inspection having its own set of requirements so that not every inspection will look at the same things (i.e. some just look at if the home is occupied, others look at plumbing, electrical, foundation, etc.)
The grain of my fact table should be by the inspection date (it is nearly a factless fact table)
Most of the time people will only want to see there was an inspection done and when it was done.
However, I do need to store the results of the inspections.
I don't know if my current structure is really appropriate considering that other items could come up that need to be added to the inspection requirements.
I welcome all suggestions on improving my current structure (forgive me this is a small sample of my data columns, and I just typed them in short-hand)
I currently have a fact table like this:
And a "junk dimension" like this with a snow flake schema for comments, condition, and placard (which I don't really like)