Add Foreign Keys

To add a foreign key

Click the button from the toolbar.
Drag and drop the field of the child table/collection to the field of the parent table/collection.
OR
Drag and drop the child field to the empty space of the parent table/collection. The referenced field will be automatically created in the parent table/collection.
Double-click the foreign key connector to open the designer.

Hint: When you hover over a foreign key line, the referenced fields and the referencing fields are highlighted.

The pop-up menu options of the foreign key in the canvas include:

Option	Description
Design Foreign Key	Edit the foreign key in a table designer. The options in the designer depend on the diagram database type you are chosen.
Go to	Go to and select the connected table/collection.
Reroute Connectors	Reroute the connector to the closest points between two connected objects.
Copy	Copy the foreign key from the diagram to the clipboard.
Paste	Paste the content from the clipboard into the diagram.
Save as Image	Save the foreign key as a PNG file.
Select All Connected Objects	Select all objects in the diagram that are connected by the foreign key.
Select All Relations	Select all foreign keys in the diagram.
Delete from Diagram and Model	Delete a foreign key from both diagram and model.
Color	Change the color of the foreign key.
Group / Ungroup	Group or ungroup the foreign key and other objects in the diagram.
Lock / Unlock	Lock or unlock the foreign key in the diagram.

Properties

Once you have selected the foreign key, you can customize the foreign key by changing its properties:

Option	Description
Foreign Key
Name	Enter the name of the foreign key.
Position	Customize the position of the line.
Offset	Customize offset values for the start and end of the line.
Show name	Display the name of the foreign key.
Font	Set the font style of the name.
Bold	Apply a bold style to the name.
Italic	Apply an italic style to the name.
Color	Set the color of the line.
Line Width	Choose the thickness of the line.
Cardinality	Specify the relationship cardinality of the table/collection.
Visible	Show the connector.
Group / Ungroup	Group or ungroup the foreign key and other objects in the diagram.
Lock / Unlock	Lock or unlock the foreign key in the diagram.