Hibernate interview questions are asked to the students because it is a widely used ORM tool. The important list of top 20 hibernate interview questions and answers for freshers and professionals are given below.
How to create a SQL query in hibernate?
To create a SQL query in Hibernate, you would have to use this line of syntax: Don’t be surprised if you get this and similar Hibernate interview questions during your job interview. The syntax is an important aspect of Hibernate, so you are bound to get asked to provide multiple different answers and examples concerning and involving it.
What is the use of addhibernate SQL query in SQL Server?
Hibernate SQL Query is very handy when we have to execute database vendor specific queries that are not supported by Hibernate API. For example query hints or the CONNECT keyword in Oracle Database.
How to get the data type of a column in hibernate?
Hibernate uses ResultSetMetadata to deduce the type of the columns returned by the query, from performance point of view we can use addScalar() method to define the data type of the column. However we would still get the data in form of Object array.
What is hibernate exception handling?
Exception Handling: Hibernate wraps the JDBC exceptions and throws unchecked exceptions like JDBCException or HibernateException. This along with the built-in transaction management system helps developers to avoid writing multiple try-catch blocks to handle exceptions.
Is it possible to make a hibernate entity final?
Yes, it is possible to make a Hibernate Entity class final, but it is not a good practice.
What is Hibernate framework?
The aim of hibernate framework is to free the developer from the common data persistence-related complex configurations and tasks. It does so by mapping the POJO objects with the database tables efficiently and most importantly in an abstract manner. The developer need not know the underlying complications involved.
