External business rules example use

You can use an external rule to define the criteria for identifying a suspected duplicate-party matching. When you add a new party, a search is performed to determine if there are any suspected duplicates of the party being added. One step in the suspect search is to match the new party against the suspects found to determine how closely they relate. Because there are different methods for matching parties, and these methods may change, party matching is an externalized rule. InfoSphere® MDM knows that party matching must be done, what data must be provided to the externalized matching, a source and target party, and what data is returned: match and non-match scores. The externalized rule that you create for party matching determines what elements are used to match the parties. These elements are called critical data. The match relevancy scores related to that critical data, for example, 5 points assigned to a match, and -5 points assigned to a non-match, are also externalized, but in a code table.