The first diagram of the relational model contains a repeating group between the Person and the Tasks tables. Note how both employees and managers are included in the Person table and there is an extra table containing type codes and type descriptions form those type codes.
Note the ID attributes included in this diagram. These attributes are the links required between the tables in order to link the entities in the relational model. Note the removal of the repeating group by the addition of the Person-Task table.