![]() This is the least common type of relationship in a data model. In this article, we’ll discuss the third type of relationships: the one-to-one relationship. In a physical database, it has to be implemented by using one-to-many relationships and a junction table. ![]() This type of relationship is only used in logical data models. Another common type is a many-to-many relationship. The most common type of relationship is a one-to-many relationship, where a record in one entity can be referenced by multiple records in another entity.
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