In this example I am going to show you how we can implement One to Many(@OneToMany) relationship using JPA persistence API in Java. The Java Persistence API (JPA) is a Java specification for accessing, persisting, and managing data between Java objects / classes and a relational database. The JPA is used to reduce the burden of writing codes for relational…

In bidirectional association, we will have navigation in both direction, i.e, both side of the association will have the reference to the other side. The both side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In one to many or many to one relationship, one source object can have…

In unidirectional association, we will have navigation only in one direction, i.e, only one side of the association will have the reference to the other side. The one side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In one to many relationship, multiple target objects can have relationship with…

Introduction In bidirectional association, you will have navigations in both direction, i.e, both side of the association will have the reference to the other side. The both side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In many-to-one/one-to-many relationship, multiple source objects can have relationship with same target object or…