what is Hibernate Interview Questions

What is Hibernate?

Hibernate is an object-relational mapping (ORM) solution for the language.
it provides an easy to use framework for mapping an object-oriented domain model to a traditional relational database.Hibernate is a powerful, high performance object/relational persistence and query service. This lets the users to develop persistent classes following object-oriented principles such as association, inheritance, polymorphism, composition, and collections.

What is NHibernate?
NHibernate is an Object-relational mapping (ORM) solution for the Microsoft .NET platform. to know more about click here to know NHibernate

What is ORM?

ORM stands for Object/Relational mapping. It is the programmed and translucent perseverance of objects in a Java application in to the tables of a relational database using the metadata that describes the mapping between the objects and the database. It works by transforming the data from one representation to another.

What are the benefits of ORM and Hibernate?

There are many benefits from these. Out of which the following are the most important one.

1. Productivity – Hibernate reduces the burden of developer by providing much of the functionality and let the developer to concentrate on business logic.
2. Maintainability – As hibernate provides most of the functionality, the LOC for the application will be reduced and it is easy to maintain. By automated object/relational persistence it even reduces the LOC.
3. Performance – Hand-coded persistence provided greater performance than automated one. But this is not true all the times. But in hibernate, it provides more optimization that works all the time there by increasing the performance. If it is automated persistence then it still increases the performance.
4. Vendor independence – Irrespective of the different types of databases that are there, hibernate provides a much easier way to develop a cross platform application.