Staging tables are used in the transformation of raw data into a star schema format. They are temporary storage.

This slide is an examples of a Track Back Diagram.

From left to right:

The two source tables shown in this diagram are ac_mstr and code_mstr. Note that the boxes are in green, there are outside the data Warehouse.

The source tables feed the load tables. The load tables are combined to a single stage table. Finally, we see that the stage table feeds the account dimension table.