is a logical collection of match column rules that have some properties in common.
Match rule sets are associated with match column rules only—not primary key match rules.
Match rule sets allow you to run different sets of match column rules at different times. Each time the match process is run, only one match rule set is used. To match using a different match rule set, select the match rule set and run the match process again.
The match rule sets that you configure are used in the Data Director to create extended queries. When you modify or delete a match rule set, the queries that use the match rule set are deleted.
Only one match column rule in the match rule set needs to succeed in order to declare a match between records.