Understanding of the JPA – One-to-One Mapping
One-to-one mapping can establish the relationship between the two entities where each instance of the one entity is associated with exactly one instance of the other entity. Let’s illustrate the example of the Person entity having a one-to-one relationship with an Address entity.
JPA One-to-One Mapping
In Java, JPA can define the Java Persistence API, One-to-one mapping is the common association relationship where one instance of the entity is associated with exactly one instance of another entity.
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