How does the Java framework integrate advanced database technology?

The Java framework integrates advanced database technologies by connecting directly to the database using JDBC, executing SQL queries and managing data. Map Java objects to database tables through the ORM framework to simplify database operations. Use NOSQL framework to process non-relational data such as key-value pairs and documents.

How Java framework integrates advanced database technologies

As applications become more complex, the need for high performance, scalability The demand for and fault-tolerant database solutions is also growing. Java frameworks help developers address these challenges by providing powerful mechanisms for integrating advanced database technologies.

Connect to the database using JDBC

JDBC (Java Database Connectivity) is the standard API in Java for connecting to relational databases. It uses a driver to connect to a specific database, allowing you to perform SQL queries, insert and update data.

Code example (using JDBC):

try (Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "root", "password")) {
  Statement stmt = con.createStatement();
  ResultSet rs = stmt.executeQuery("SELECT * FROM users");
  while (rs.next()) {
    System.out.println("User ID: " + rs.getInt("id") + ", Username: " + rs.getString("username"));
  }
} catch (SQLException e) {
  e.printStackTrace();
}

Using the ORM framework to map objects to the database

Object relational mapping (ORM ) framework maps Java objects to database tables. This simplifies database operations because you can work with objects directly in Java code without having to write SQL queries directly.

Code sample (using Hibernate):

@Entity
@Table(name="users")
public class User {

  @Id
  @GeneratedValue
  private int id;

  private String username;
  private String password;

  // getters and setters
}

public class Main {

  public static void main(String[] args) {
    Session session = HibernateUtil.getSessionFactory().getCurrentSession();
    session.beginTransaction();

    User user = new User();
    user.setUsername("john");
    user.setPassword("secret");
    session.save(user);

    session.getTransaction().commit();
  }
}

Using the NOSQL framework to process non-relational data

NoSQL databases are dedicated to storage and managing non-relational data such as key-value pairs, graphs, and documents. The Java framework provides mechanisms to integrate with popular NoSQL databases such as MongoDB and Cassandra.

Code example (using Spring Data MongoDB):

@Document(collection="users")
public class User {

  @Id
  private String id;

  private String username;
  private String password;

  // getters and setters
}

public interface UserRepository extends MongoRepository<User, String> {}

public class Main {

  @Autowired
  private UserRepository userRepository;

  public static void main(String[] args) {
    User user = new User();
    user.setUsername("jane");
    user.setPassword("secret");
    userRepository.save(user);
  }
}

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