The Relationship tab displays foreign key relationships between tables in a graphical format. The following image demonstrates a sample
relationship between different tables in the connected database:
As shown in the diagram above, there is a min-toolbar at the top row in the relation tab.
Each individual button in the toolbar is as explained below :
Modify Column Dialog :To modify a columns properties.
Rename Table Dialog :To rename a table.
Add Column Dialog :To add a new column to a table.