One of the developing high level object handling framework is Hibernate,this is an Open source software,so it can be downloaded at free of cost.Basically it was called as the ORM which means relating the objects and mapping it with the applications.
It was used as the library for object oriented language such as Java with a well defined domain model relating the objects.It gives solution for the many problems that occur during the impedance mismatch while relating the objects and this has been done decently well by Hibernate by using its high level object handling functions with respective databases.The following block diagram will give you an idea about the persistence of Java with Hibernate:
The basic function of hibernate technology is to map the Classes compiled by Java programs to the tables in the databases.It does the job of a developer by generating the SQL calls automatically and desires the application as a portable one to all databases.For technical purposes it takes help from XML for mapping the classes to the respective databases.Hibernate at times provides the SQL for the applications and these type of hibernates are called as the Hibernate Query language.
Its main purpose is to server the java applications so it uses the servlets and other tools in Java.There are many versions in Hibernate but the latest version is 3.x and under this certification can be done to expose a developer as a Well-Skilled Hibernate developer.Nowadays, its been used all over IT sectors for developing the hibernate based web applications due to the high handling object relational functionality of Hibernate.It also provide us a good career if we are a Certified Hibernate Programmer.