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Java > Learn Java > How do you link tables in Hibernate via Java Spring?
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How do you link tables in Hibernate via Java Spring?

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To link tables in Hibernate via Java Spring, use annotations like `@OneToMany`, `@ManyToOne`, or `@ManyToMany` in your entity classes. Define relationships by specifying the mapped entity and use `@JoinColumn` to indicate foreign key columns. Additionally, configure cascading and fetch types as needed...
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To link tables in Hibernate via Java Spring, use annotations like `@OneToMany`, `@ManyToOne`, or `@ManyToMany` in your entity classes. Define relationships by specifying the mapped entity and use `@JoinColumn` to indicate foreign key columns. Additionally, configure cascading and fetch types as needed to manage the relationship behavior.

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To link tables in Hibernate via Java Spring, you typically use JPA annotations to define relationships between entities. Here's a quick overview: 1. **Define Entities**: Create Java classes for each table and annotate them with `@Entity`. 2. **Establish Relationships**: Use annotations like: ...
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To link tables in Hibernate via Java Spring, you typically use JPA annotations to define relationships between entities. Here's a quick overview: 1. **Define Entities**: Create Java classes for each table and annotate them with `@Entity`. 2. **Establish Relationships**: Use annotations like: - `@OneToOne`: for one-to-one relationships. - `@OneToMany`: for one-to-many relationships. - `@ManyToOne`: for many-to-one relationships. - `@ManyToMany`: for many-to-many relationships. 3. **Example**: ```java @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @OneToMany(mappedBy = "user") private List orders; } @Entity public class Order { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ManyToOne @JoinColumn(name = "user_id") private User user; } ``` 4. **Repositories**: Create repository interfaces extending `JpaRepository`. 5. **Service Layer**: Use a service layer to manage business logic and transactions. 6. **Configuration**: Ensure your application is configured to use Hibernate and JPA. This setup allows you to manage linked tables efficiently using Hibernate's ORM capabilities. read less
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To link tables in Hibernate via Java Spring, you can use the following approaches: @OneToOne: Maps one table to another with a one-to-one relationship. @OneToMany: Maps one table to multiple tables with a one-to-many relationship. @ManyToOne: Maps multiple tables to one table with a many-to-one...
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To link tables in Hibernate via Java Spring, you can use the following approaches:

  • @OneToOne: Maps one table to another with a one-to-one relationship.
  • @OneToMany: Maps one table to multiple tables with a one-to-many relationship.
  • @ManyToOne: Maps multiple tables to one table with a many-to-one relationship.
  • @ManyToMany: Maps multiple tables to multiple tables with a many-to-many relationship.

You can use these annotations on entity classes to define the relationships between tables. Additionally, you can use @JoinColumn to specify the join column and @JoinTable to specify the join table.

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