Hibernate Interview Questions and Answers
Hibernate or Hibernate ORM is a framework and a mapping tool for Java. It is an object-relational mapping tool that gives an object-oriented domain model to the relational database. The structure is able to handle the problems of object-relational impedance mismatch by the replacement of persistent and direct database access with the functions of high-level object handling functions. There are several Hibernate Interview Questions which must be learned by the students to give their best shot and get the desired job.
Advantages of Hibernate
- Database independent can work with DB2, SQL, MySQL, Oracle, etc.
- Get the benefits of OOP Concepts such as encapsulation, inheritance, etc.
- No requirement of hitting database for related queries, directly cache it and use it
- Easy to write, support and read
- Lazy loading is possible
Most Frequently Asked Hibernate Interview Questions
The default annotation for a property in the Java framework is a @ld annotation, where Hibernate assumes that the annotation is on the object’s access properties and detects that it is on the field. Placing the annotation @ld on getId() method gives access to the features through getter and setter methods and that too by default.
Configuration settings are required for the database and various other related parameters in Hibernate. The format for displaying such information is supplied as an XML file named hibernate.cffg.xml and hibernate.properties know as standard Java properties file.
The object or relational mappings are the files which are defined in an XML document which instruct Hibernate in mapping the defined classes or class to the tables in the database.
| S.no | JDBC | Hibernate |
|---|---|---|
| 1. | Standard API | ORM (Object-Relational Mapping) |
| 2. | Java applications used JDBC for communicating with the database | Used for mapping Java objects to a corresponding relational database. |
To read more Hibernate Interview Questions, and make the concepts clear, you can visit the Best Interview Question.
Development History
Hibernate ORM was developed by Gavin King in 2001 as a replacement to using EJB2-style entity beans. The latest version is Hibernate ORM 5.4.0, and it was released in December 2018.