Hi, I have a business problem of reconciling two data sets with each data set running into millions of records. This matching of data sets needs to be done based on few rules like date, amount or tolerance based matching. Can you pls let me know what is the best approach for doing this kind of matching using rules engine. cheers -- View this message in context: http://old.nabble.com/Problem-of-matching-many-to-many-tp26441557p2644155... Sent from the drools - dev mailing list archive at Nabble.com. _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev