HIBERNATE IN JAVA

 Hibernate 

• HIBERNATE 
• ADVANTAGES 

The most popular object/relational persistence and query service available today is 

Hibernate, which is open source and distributed under the LGPL. Data retrieval and the 
mapping of Java classes to database tables are managed by the Hibernate framework. You 
may download Hibernate for free.
This thorough Hibernate tutorial guides users through the process of building 
database-driven web applications using the framework will be helpful to both novices and 
experienced developers. We cover a lot of territory, including database operations (both 
basic and sophisticated), Hibernate Query Language (HQL), mapping Java classes to database 
tables, and Hibernate settings.
What is the hibernate framework?
The Hibernate framework for Java is available for free and open-source download from the 
GNU Lesser General Public License (LGPL) website. Gavin King introduced Hibernate in 
2001 as a novel replacement for the EJB2-style entity bean. Connecting Java objects to 
database tables is one technique to simplify data retrieval and durability without the need 
for complex SQL queries. Hibernate streamlines and improves database interactions with its 
automatic event handling and caching features. It is therefore an essential basis for efficient 
data management in Java applications.

Advantages of hibernate 

The advantages of the Hibernate framework are:
1)     Open source and lightweight.
The lightweight and open-source Hibernate framework is licensed under the LGPL.
2)     Fast performance
The Hibernate framework operates rapidly because hibernation uses internal caching. 
The Hibernate framework uses two different types of caches: first-level and second-level. 
Level 1 caching is enabled by default.
3)     Database Independent Query
HQL stands for Hibernate Query Language, an object-oriented substitute for SQL. This 
program can produce queries for any database design. Thus, database searches are not required. 
Maintenance issues emerge because we have to modify the SQL query if we update the database 
for a project before it goes into hibernation.
4)     Automatic creation of tables
The Hibernate framework provides the ability to automatically create database tables. 
By using this method, you may skip the laborious process of manually constructing 
database tables.
5)     Simplifies complex joins
Retrieving data from multiple tables is easy at rest.
6)     Provides query statistics and database state
Hibernate supports query caching. and provides query and database state statistics.