I think Richard Patten wrote:
> 
> Hello everybody,
>     If I have a particular fact in the knowledge base is it ok if I
> insert the same fact into the Knowledge Base sometime later without
> checking if that fact already exists, I know this wont make a
> difference but is it to do so. 

If you assert a fact that already exists, assert returns FALSE and
nothing bad happens.


> Is there any facility in JESS to know if a particular facts exists in
> the knowledge base from a JAVA program. 
>

That's what defqueries are for.


---------------------------------------------------------
Ernest Friedman-Hill  
Distributed Systems Research        Phone: (925) 294-2154
Sandia National Labs                FAX:   (925) 294-2234
Org. 8920, MS 9012                  [EMAIL PROTECTED]
PO Box 969                  http://herzberg.ca.sandia.gov
Livermore, CA 94550

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