How to model a Business Link?
In your DWH (Data Warehouse) with a Data Vault modeling, you should need to model some Business Links between Hubs or between a Hub and a Business Hub. Of course, you need to add some filter conditions like in this example for the Business Link between the Hub HUB_CreditCard and the Business Hub BVHUB_CreditCard_SuperiorCard.
By Claire Pierreclos
Your Business Link Data Flow Set should access the Hub HUB_CreditCard and the Satellite SAT_CreditCard to be able to put the needed filter CardType = ‘SuperiorCard’:
It exists a faster way to implement your Business Link Data Flow Set: you can use the Derived DWH Object HubCreditCard_RDV_Hub_Result_VI_SQL:
No need of a join between Hub and Satellite.
Derived DWH Objects permits to create new DWH Objects based on existing Target Objects. They are new model objects without generated code: they point to an existing Target Object.
In this case we can directly use the Result View containing data from the Hub HUB_CreditCard and the Satellite SAT_CreditCard to access the hash key for the relationships to the Hubs and the CardType information for the filter.
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