Hibernate Auto Generated Primary Keys : Auto-increment is a feature in databases that automatically generates a unique value for a column each time a new row is added to a table. This is commonly used for primary key columns to ensure each row has a unique identifier.
ID Generation Strategy: In Hibernate, an ID generation strategy determines how primary key values for entities are generated. Auto-increment is one of the strategies where the database automatically assigns a unique value.


import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Table;

public class Book{

@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id", updatable = false, nullable = false)
private Long id;


Hibernate Auto-Generated Primary Keys


Java Hibernate Magic: Create MySQL Tables with Ease and Efficiency



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