Question

When considering an attribute maximum, which term represents when each attribute instance describes at most one entity instance?

Answer 1

In the context of database design, the term 'one-to-one relationship' is used when each attribute instance describes at most one entity instance, like an employee's unique ID.

Step-by-step explanation:

When considering an attribute maximum in the context of database design and entity-relationship models, the term one-to-one relationship is used to represent the situation where each attribute instance describes at most one entity instance.

This implies that for every instance of an entity, there is a unique instance of an attribute, and vice versa. For example, in a database of employees, the employee ID attribute would have a one-to-one relationship with each employee entity, as every employee has a unique ID and every ID refers to just one employee.

In the context of database design, the term 'one-to-one relationship' is used when each attribute instance describes at most one entity instance, like an employee's unique ID.