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How should I organize categories and their territory rates into Access tables?

fabi2004 asked
Last Modified: 2016-08-30
I don't know why, but I've been staring at this problem for a while now and I can't see it clearly.  Could someone please help me figure out how to set up the Access tables for this type of data?

I need users to be able to pick a Specialty Class, then pick a Location to find the Rate.  Each location is associated with a particular Territory.  Each Territory has a given Rate for each Specialty Class.  

For example,
   I have Locations: AL in T1, TX in T1, OK in T1, CA in T2, LA in T2, NY in T2, OR in T3, WY in T3, NC in T3, etc.
   I have Specialty1, Specialty2, Specialty3, etc.
   I also have Specialty1 T1 Rate, Specialty1 T2 Rate, Specialty1 T3 Rate, Specialty2 T1 Rate, etc.

I've tried combinations of tables ranging from 2 to 4.  But I can't seem to come with something logical that will allow the user to pick the Specialty Class, pick the Location, and then view the Rate (or drop the rate into a calculation).

Any ideas of how this is normally done?

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