The ERD will show columns which are not in the diagram. It'll also always render all the datatypes.
Similar to the UML, the attributes are very similar to the domain names, and Check methods.
Additional Information
It would be nice to hide some of these elements using diagram styling options.
ERD/UML elements are now influenced by:
* Showing datatype information in the diagram
* Showing fact types resulting in columns/attributes in the diagram
* Diagram style, line options, curved lines
