1. A computer program product for matching similar master data using associated behavioral data comprising a computer usable memory medium having computer readable program code embodied therein wherein said computer readable program code is configured to: access at least one field common to a first record and a second record wherein said first record and said second record comprise master data in at least one master data repository; access at least one behavior field common to a first behavior record and a second behavior record wherein said first behavior record is associated with said first record and wherein said second behavior record is associated with said second record and wherein said first behavior record and said second behavior record comprise behavior data in at least one behavior data repository; perform a duplication test between said first record and said second record using said at least one field and said at least one behavior field; and, produce a duplication test result based on said duplication test.