You can use the Data Model Editor to add columns, indexes, foreign
keys, constraints, and triggers to the model of a table.
To add a column, index, foreign key, constraint, or trigger to a
table, complete the following steps:
- Open the model that contains the table in the Data Model Editor
and find the table to be changed.
Right-click the table to be changed, select New and
then select the element to add from the menu. A new element is added to the
table, and it is displayed under the appropriate Relationship category in
the Data Model Editor.
You can now view the added element in the Properties view and then
select various options to rename and define the added element.