When there are TWO entities set participating in a relation, the relationship is called as

When there are two entities participating in a relation, the relationship is called a Binary Relation. In database terminology, this concept often pertains to how two different entities or tables are related to one another. A binary relation can be further categorized into various types such as one-to-one, one-to-many, and many-to-many relationships, depending on how the entities are associated. Each type describes the nature of the interaction or association between the two sets of entities and is fundamental in database design and mathematical set theory. In a relational database, for instance, these binary relations are typically represented via foreign keys that link one table to another.