Northern Trail Outfitters (NTO) has multiple systems across its enterprise landscape, including Salesforce, with disparate versions of the customer record. In Salesforce, the customer is represented by the Contact object.
NTO utilizes a master data management (MDM) solution with these attributes:
1. The MDM solution keeps track of the Customer Master with a Master Key.
2. The Master Key is a map to the record IDs from each external system that customer data is stored within.
3. The MDM solution provides deduplication features, so it acts as the Single Source of Truth.
How should a Data Architect implement the storage of the Master Key within Salesforce?