SAP CE BRM decision table input and output

HI,

I have requirement on BRM decision tables where....

1) Product Type is derived from Auth Group

2)Auth grp is derived from Product Type

If I am creating Decision table I have to set one column as input and one as output. In this case I am ending up with creating 2 decision tables to get the desired output for mentioned requirements.

is there a way that we can create one decision table  where we can get the output? Business dont want to end up with updating 2 tables when ever there is change required.This table will have more than 100+ rows entries.

for ex : If I send Prd type it has to give auth grp- combination value

          If I send Prd type it has to give auth grp combination value

Please let me if we have solution for this on BRM?