What is Bidirectional Association in Hibernate?

In Hibernate, bidirectional association refers to the relationship between two entities where each entity has a reference to the other entity. It allows you to navigate from one entity to another entity that is associated with it and vice versa as well. We can achieve bidirectional association by defining the relationship and mapping the annotations in the entity classes. There are 4 different types of Bidirectional association which are as follows: 

1. One-to-One Bidirectional Association
2. One-to-Many Bidirectional Association
3. Many-to-One Bidirectional Association
4. Many-to-Many Bidirectional Association

Hibernate is a powerful open-source framework for Java that provides an object-relational mapping solution. It simplifies the process of working with databases which allow developers to map Java objects with the data present in the database tables. Hibernate handles the data persistence which allows developers to focus more on object-oriented aspects rather than focusing on low-level database operations.