Spring Boot: JPA One-to-One Mapping

Introduction When working with relational databases in Java, JPA (Java Persistence API) makes it easier to map relationships between entities. One of the most fundamental relationships is One-to-One mapping. In this blog, we'll break it down in a way that makes it simple and enjoyable to learn! By the end of this article, you'll understand: What One-to-One mapping is. How to implement it in Spring Boot with JPA and Hibernate. The different ways to set up the relationship. Practical use cases for real-world applications. Let's dive in!

Mar 14, 2025 - 17:56
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Spring Boot: JPA One-to-One Mapping

Introduction

When working with relational databases in Java, JPA (Java Persistence API) makes it easier to map relationships between entities. One of the most fundamental relationships is One-to-One mapping. In this blog, we'll break it down in a way that makes it simple and enjoyable to learn!

By the end of this article, you'll understand:

  • What One-to-One mapping is.
  • How to implement it in Spring Boot with JPA and Hibernate.
  • The different ways to set up the relationship.
  • Practical use cases for real-world applications.

Let's dive in!