One of goals the in programming is representation of models from the real world. Very often an application needs to model some relationship between entities. In the last article about Hibernate associations I described the rules of setting up a "one to one" relationship. Today I'm going to show you how to setup a bidirectional "one to many" and "many to one" association. This example will be based on previous Hibernate tutorials.
Today I want to show you an example of unidirectional one to one association using primary key. It can be a little bit difficult for beginners to setup such association but I will try my best to explain all aspects in a clear way. For this tutorial I choose MySQL as a database, also I will use Hibernate and JPA annotations.
In one of my previous posts I made an overview of Hibernate and its main principles of work. Now I want to talk about one of the most important features of Hibernate - associations. An association represents a relationship between two tables in a database. So let's go further because great things wait for us.
As a continuation of the previous article, I want to demonstrate a simple example of Hibernate usage. I will show you the basic principles of Hibernate functionality. The article will cover annotation based configurations. For the tutorial you need to have installed an IDE (e.g. Eclipse), Maven, m2e plugin, MySQL.