Realization is a specialized Abstraction dependency between two sets of NamedElements, one representing a specification (the supplier) and the other representing an implementation of that specification (the client).
To create a Realization, you can:
•Draw a Realization line from the Client to the Supplier.
•Draw a Realization node accessed from Realization\Dependency node, and then draw the lines to the Client and Supplier separately. This procedure is described in Creating a Realization and connecting lines separately.
The Realization option supports drawing of a single line to represent the relationship.
Where a Realization Node symbol exists on a diagram, the refresh for representational consistency action will hide any new Realization line that represents the same relationship.