Many to One Mapping in JPA

In this example I am going to show you how we can implement Many to One(@ManyToOne) 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 object management, a programmer or developer follows the ‘JPA Provider’ framework, which allows easy interaction with database instance. The JPA being a Java framework a programmer also needs not to worry about the SQL part of the code, he/she may need to hardly concentrate on SQL coding.

You may be interested in One to Many Mapping in JPA , Many to Many Mapping in JPA and One to One Mapping in JPA

In this Many to One mapping example, we have Teacher and Period relationship. Many teachers can be assigned to a class period or in the other words, a class period can be taken by multiple teachers at different times.

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