How is process management carried out using Spring Data JPA?

In Spring Data JPA, transaction management is performed using the @Transactional annotation. It allows defining transaction boundaries at the method or class level. When a method annotated with @Transactional is called, Spring opens a transaction, and after the method execution, it either commits or rolls back the changes depending on the outcome.

Example of usage:

@Service
public class UserService {

    @Autowired
    private UserRepository userRepository;

    @Transactional
    public void createUser(User user) {
        userRepository.save(user);
        // additional operations that should be atomic
    }
}

Thus, Spring Data JPA integrates with Spring's transaction mechanism, providing management of database operations without the need for manual transaction management.