Create a fact table
- On the DWD Designer, click the Designers tab.
 - On the left pane, right-click Fact Tables, then select New Fact Table.
 - Specify a fact table name.
 - Ensure that the Fact Table radio button is selected.
 - Select Table or View as required.
 - Select Show Original Names if you want to work with the original table metadata (M3). To work with descriptive metadata names clear this box.
 - Expand the Sources for Fact Tables tree to view objects.
 - Click an object to move it to the middle pane. Use the arrow buttons to move the object to the right-hand pane.
 - Click Column Mapping tab.
           Note:
You can return to the Source Selection tab at any time to add or remove objects or change other setting.
 - Click an object in the upper left pane to show its columns in the lower left pane. Add all columns that are mandatory natural keys from the left.
 - Add all the necessary columns to the fact table by double-clicking a column or using the arrow buttons. Remove columns from the fact table using a double-click or the arrow button.
           Caution:
You must add all columns that are mandatory keys in the source object. These are identified in bold.
 - When all columns are added to the mapping pane, click OK.
           
The fact table is saved to the Fact Tables folder in the Designer tab.