Question

A unary relationship is a relationship between the instances of a ________ entity type, which are also called recursive relationships.

A) Single
B) Double
C) Triple
D) Many

Answer 1

A unary relationship is a relationship between instances of a single entity type, which are also called recursive relationships.

Step-by-step explanation:

A unary relationship is a relationship between the instances of a single entity type, which are also called recursive relationships. In other words, a unary relationship involves a relationship between entities of the same type.

For example, let's consider an entity type called 'Employee'. A unary relationship in this context would refer to a relationship between two employees, such as 'Supervises', where one employee supervises another employee.

Therefore, the correct answer is option A) Single.