[rules-users] best practices for lookup tables like interest table?

[strug]

hi,

i'm quiet new to writing rules and asking myself - ah you - what is the best
way to implement a lookup table? 

i want to have the following table reachable from within my rules:

               | 30 days   | 60 days  | 90 days 
> 5000 €   |  2.7 %    | 2.8 %     | 2.9 %
> 10000 € | 2.85 %   | 2.9 %     | 2.95 %
> 20000 € | 2.9 %     | 2.95 %   | 3.0 %
..

is it best to write a function which works internally on a two dimensional
array?

i want to have the numbers/tables be part of the drl files, in order to be
able to dynamically reload them, so a java helper class is not aimed.

thanks for any feedback and experience, leif
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