Fact Dimension issue

Hi All,[b]requirement :[/b]"Fact dimension – load from LatencyDays"Do I need to create this dim separately or else while creating cube automatically creating a fact dimwith fact table name. Is this same which I mentioned as requirement.If yes, taking only one Latency days column into dim is that fine for fat dim, or else do I need to take all key columns into dim.Please help in understanding the degenerate dim.Thanks,NIHARIKA