Entity relationships overview
Entity relationships define the ways that entity records can be associated with records from other entities or the same entity. There are two types of entity relationships.
- One-to-many relationships. In a one-to-many entity relationship, many referencing (related) entity records can be associated with a single referenced (primary) entity record. The referenced entity record is sometimes referred to as the ”parent” and records of the referencing entity are referred to as ”children.” A many-to-one relationship is just the child perspective of a one-to-many relationship.
- Many-to-many relationships. In a many-to-many entity relationship many entity records can be associated with many other entity records. Records related using a many-to-many relationship can be considered peers and the relationship is reciprocal.
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