Working With the Master Index Data Manager

Single Best Record

The single best record (SBR) for an object profile is made up of a combination of information from all active source records associated with that object profile. The SBR represents the information that is determined by the master index application to be the most reliable and current of all source records in an object profile. The SBR is dynamic and is recalculated each time an update is made to an associated source record, a merge or unmerge affects the object profile, or a source record in the profile is deactivated or reactivated. You can use the overwrite capability of the MIDM to update the SBR directly or you can update a source record and allow the survivor calculator to determine how to update the SBR (for more information, see Survivor Calculator).

You can override the survivor calculator by specifying values for the SBR in two ways. You can use the overwrite capability to update a field, and that field remains locked and cannot be updated by changes to source records until the field is unlocked. You can also link a field in the SBR to the same field in one of the profile's source systems, and that SBR field will always contain the same value as the source system until the link is removed. For more information about the overwrites and linked fields, see Locking Field Values in the SBR.