It is necessary to include relationship descriptions like this when creating an entity relationship diagram. If we added a third entity (Sport), we would have another relationship to add.

Occasionally one sees an entity-relationship diagram (ERD) having an unusual characteristic. The unusual element is an entity (or more than one) that seems to have a relationship with every other ...

Secondary games; National 5; Design Relationships and entity relationship diagrams. Designing queries and establishing a data dictionary are important.