Curved Binary Relation (vertical connection)

Meaning

The Curved Binary Relation (vertical connection) shows that two entity sets are connected to it take part in a relation.

This shape consists of the relation and two edges for simple use.

Utilization

Control Points

A ) moves the rectangular box along the axis
B1-B5 )
  • moves the position of the corresponding text box
  • appears only when text has been entered
  • to enter text, first click on the shape, then single-click on the text box and start typing or type F2 to edit an existing text

Context Menu

The context menu lets you set the type of the Curved Binary Relation.

  n:m Relation - The relation box will become empty. You are encouraged to add the cardinalities in this case.
1:n Relation - This results in an arrow.
n:1 Relation - The same as 1:n Relation, just the arrow will point in the other direction.
1:1 Relation - This results in a double-headed arrow.

See also

Binary Relation (direct connection)
Binary Relation (horizontal & vertical connection)
Curved Binary Relation (horizontal connection)