Defining Precedence Definition Repository

The PrecedenceDefinition repository includes a set of properties that define the quality of an attribute for a source, only when the previous source was a specific one. The repository defines any relative weight between two sources.

Procedure
1. In TIBCO MDM, click Precedence Management.
2. On the Precedence Management page, click the Precedence Definitions tab.
   
3. Click Create.
4. In the Precedence Details section, enter the required details:
   Note: The following table provides additional information that is useful when filling the fields. This is not an exhaustive list of all fields.

   Field Name	Description
   Trust Factor	Enter the trust factor, which must be a positive integer. It is applied to the weight only if the value comes from the specified old source and new source. Example: You have defined a trust factor of 50 for the previous source (SAP). In this case, when data from the new source (JDE) is received for an attribute, and if the old data was from SAP, then after calculating the weight of SAP (weight + decay), the trust factor is applied to reduce the weight further. The precedence definition is optional if the trust factor is not applied. The trust factor is applied only to a new source for weight calculation. Decay is applied only to an old source.
   Previous Source	Select the value from the Source repository if the precedence applies only if the previous change was from a specific source.

5. In the Source References section, you can enter new records or existing records from the RecordSource repository. See Defining Source.
6. Click Validate, and then Save.
   Records are validated and then saved in the PrecedenceDefinition repository.