Viewing the history of Schema Tools actions
You can view the history of actions taken on a database table to see the status of an operation in Schema Tools. This information will also be reflected on the Schema Change Tracking tab.
In the header of Dev Studio, click.
Select the table for which you want to view history.
The History tab in the right pane displays an audit trail of actions taken for the table. Use the arrows to scroll through the list or enter a page number.