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Spring Boot Relationship Mappings

Spring Boot with JPA provides various relationship mappings to define associations between entities using annotations. These relationships correspond to SQL JOIN operations.

Types of Relationship Mappings:

Relationship Type	Description	Example
One-to-One (`@OneToOne`)	One entity has exactly one related entity.	A `User` has one`Profile`.
One-to-Many (`@OneToMany`)	One entity has multiple related entities.	A `Department` has many`Employees`.
Many-to-One (`@ManyToOne`)	Many entities are related to one entity.	Many `Employees` belong to one`Department`.
Many-to-Many (`@ManyToMany`)	Many entities are related to many entities.	Many `Students` enroll in many`Courses`.

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SB Relationship Mappings

Spring Boot Relationship Mappings

Types of Relationship Mappings:

Relationship Type

Description

Example