You can set column and field properties for Entity, Type, and View shapes as follows.
Physical Name column
Type the name of the column.
Data Type column
For the Entity shape, click the type of data that will be entered in the column. For object relational databases, type the complex type.
Req'd column
For the Entity shape, select this check box to specify that the column cannot contain NULL values.
PK column
For the Entity shape, select this check box to specify that the column is a primary key for the table.
This check box is not available for the View and Type shapes.
Add
Click to add a column.
Remove
Click to delete the selected column or columns.
Edit
Click to open the Column Properties dialog box, in which you can set additional options for the selected column.
Move Up
Click to reorder the columns in this list and in your diagram.
Move Down
Click to reorder the columns in this list and in your diagram.
Portable data type
Click to show the data types that are not driver-specific.
Physical data type
Click to show the data type used by the driver you selected.
