A unidirectional functional association is either one-to-one or many-to-one. In both cases such an association is represented, or implemented, with the help of a single-valued reference property.
In this chapter, we show
how to derive a data model in the form of a Java Entity class model from an OO class model with single-valued reference properties representing unidirectional functional associations,
how to code the Java Entity class model in the form of entity classes (implementing model classes),
how to write the view and controller code based on the entity classes.