Hibernate Mappings Explained: OneToOne, OneToMany & ManyToOne (Bidirectional)
In this tutorial, we break down the most essential concepts in Hibernate and JPA: Entity Mappings. As a Java developer, understanding how to relate tables is crucial for building robust backend systems.
What you will learn in this video:
@OneToOne: How to link two entities in a strict 1:1 relationship.
@OneToMany & @ManyToOne: The most common relationship type and how to manage them efficiently.
Bidirectional Mapping: Why you need it and how to keep both sides of the relationship in sync.
The mappedBy Attribute: The "Secret Tip" to defining the ownership of a relationship to avoid duplicate columns and database mess.