Virtual Data Mart Layer

If you are using an SAP HANA database for your BW system, the virtual data mart layer replaces the virtualization layer. The virtual data mart layer contains all InfoProviders that

• combine data using join or union, without saving the result: MultiProvider, CompositeProvider

• access data directly in the SAP HANA database, to allow queries on the data: CompositeProvider, Open ODS View

The layer creates parentheses, which include all persistency layers but which also remain flexible.