Viewing the results of the match and survivorship process in the Staging Data browser

If the records which are pending validation in the Staging Area come from a data model that has a Match Rule attached to it, MDM applies this Match Rule to the records when you launch the validation process, in order to check for matches and decide which values to use for the golden record. This is the match and survivorship process.

During the match and survivorship process, the records pending validation will be matched against the golden record first in an existing match group, and the records that do not match the golden record will be matched against the source record(s) in the match group.

For more information on creating Match Rules and attaching them to a data model, see the Talend Studio User Guide.

The results of the match and survivorship process can be seen in the Staging Data Browser.

The Match group column shows the identifier assigned to each group of matches by MDM.

The Status column shows the results of the process.

Depending on the criteria defined in the Match Rule, some records may be identified as potential matches that require manual intervention from a data steward to decide if they are true matches or not.

Next time the Staging validation is run, the process looks at how the associated tasks were dealt with and updates the status of the record accordingly. If a task is resolved, for instance, the status of the record changes from 203 to 204 and the record is submitted to the master storage immediately, before ending up with a 205 or 40x status at the end.

If a record is deleted (status 206), it is removed from the match group to which it belongs and the survivorship process is run again.

After you resolve one or more tasks, you have to run the Staging validation again to take into account the record status changes.