We use the term relationships to represent the relationships between two entities. Usually, a relationship has a name, for example, the relationship between creators and teams is a create relationship. And, relationships are usually mentioned with cardinality, for example, the create relationship is a one-to-many relationship. That is, one Team Creator can create zero or multiple teams and one team can be created by one Team Creator. The other cardinalities include one-to-one and many-to-many.