(ILOG) IBM ODM Is there anyway to use decision table like lookup table or Is it a bad usage?

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Java

IBM

I implemented some rules like;

- Check the id if it is in convenient date, then add related group for example aaaa
- In action rule check that if item is in related group add message or remove message

But i think it is not convenient for rule engine to use some tables to add new groups and check that groups in action rule than adding some values.

As I saw here i need to use some lookup tables. But my idea is that I don't want to use database to implement that conditions.

Is there anyway to use decision tables as lookup tables or should i use database for that implementation. Or is there anyway to accomplish that problem?

Thanks for your help.