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It is a framework of java that contains a set of libraries to provide secure data access has complete ORM (Object-relational mapping) to map the complete database table using POJO Classes.

It provides SQL LESS (NoSQL) query to perform a database operation, it provides persistent object model, criteria, HQL(Hibernate query language) to perform the database-related tasks.

Hibernate provide a strong approach to data communication because we can map complete database structure and relationship using the hibernate framework.

1 )  create a table, primary key, foreign key, identity using front-end

2)    data insertion ,updation,deletion,data selection,join operation,data filtering,table mapping,and table relationship from application.

Hibernate provides better security as compare to normal SQL Operation because it protects from SQL Injection problem.

SQL Injection means to hack the database using  SQL Query parameters.

Hibernate use JDBC or JNDI or JTA as an intermediate to save object data to the database table.
JNDI (Java naming directory interface)
JTA (Java Transaction API)
JDBC(Java Database Connectivity)

Hibernate Architecture:-


1   Create  Java Project (Desktop, Web-Based, Enterprise)

2    Add Hibernate JAR File in Project

3    Create a POJO Class for Table Mapping

4    Create a Database using MYSQL or ORACLE or POSTGRESQL or SYBASE or MS-SQL

5     Create hibernate.cfg.xml file
       it provides complete database configuration  in hibernate application
      code of

     <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"

<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/hdb</property>
<property name="connection.username">root</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="">update</property>
<property name="show_sql">true</property>
 <mapping resource="hibernate.hbm.xml"></mapping>
6     create hibernate.hbm.xml file
       it provides a complete mapping to hibernate POJO Class with Database Table
     <?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

<class name="scs.Student" table="tbl_Student">

<id name="rno" column="rno">
<generator class="assigned"></generator>
<property name="sname" />
<property name="branch"/>
<property name="fees" />

7     Write Code For Hibernate Insert Operation

        Configuration cfg = new Configuration("filename");
       SessionFactory sf = cfg.buildSessionFactory();
        Session s = sf.openSession();
       Transaction tx = s.beginTransaction();
        PojoClass obj = new PojoClass();
8)    Write Code For Hibernate Select Operation
        package scs;

import java.util.Iterator;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

public class HiberOpertion {

public static void main(String[] args) {
Configuration cfg = new Configuration();
SessionFactory sf = cfg.buildSessionFactory();
Session s = sf.openSession();
    Query q = s.createQuery("from Student s");
    List lst = q.list();
    Iterator it = lst.iterator();
    Student st = (Student);
    System.out.println(st.getRno()+" "+st.getSname()+" "+st.getBranch()+" "+st.getFees());




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