This diagram depicts a data warehouse architecture of the data vault modelling approach.
It consists of three layers:
- Staging Area: This layer supports the data loading process from heterogeneous data sources.
- Raw Data Vault / Business Data vault: The raw data vault holds the raw data that its contents have not been processed. And the business data vault contains modified data based on the business rules.
- Data Marts: This is an information delivery layer, where it can either be a physical model or a virtual model.