Subject Area defines major groupings of data or information concepts.
It can be broken down to a more detailed information modelling diagram(s).
A subject area can be classified:
Reverse and forvard Engineering
A SubjectArea can be used to reverse and forvard engineer databases. From the SubjectArea there are links to “Breaks Down To” references to DataModelDiagram (logical level) and RelationalDiagram (physical level).
On the Physical Implementation tab, you can link to DataConversionTemplate and add a DataSourceConnection.
When you double click on the SubjectArea you can select to open the dialog, or go to the Logical (RelationalDiagram) or Physical (DataModelDiagram) directly.
When you have linked a SubjectArea (with a DataSourceConnection) as Master to a RelationalDiagram you can reverse engineer, see more on the RelationalDiagram.