What is JPA interview questions?
JPA Interview Questions And Answers
- What is JPA?
- What is the difference between JPA and Hibernate?
- Is it possible to use JPA with noSQl databases?
- What is the difference between JPA and JDO?
- What is Entity?
- Can the Entity class inherit from non-Entity classes?
- Can an Entity class inherit from other Entity classes?
What is Spring data JPA interview questions?
20 Spring Data JPA Interview Questions with Answers
- What is JPA?
- What are some advantages of using JPA?
- What is the Spring data repository? (
- What is the naming convention for finder methods in the Spring data repository interface?
- Why is an interface not a class?
What is JPA method?
The Java Persistence API (JPA) is the standard way of persisting Java objects into relational databases. The JPA consists of two parts: a mapping subsystem to map classes onto relational tables as well as an EntityManager API to access the objects, define and execute queries, and more.
What is the difference between crud repository and JPA repository?
Crud Repository is the base interface and it acts as a marker interface. JPA repository also extends the PagingAndSorting repository. It provides all the method for which are useful for implementing pagination. Crud Repository doesn’t provide methods for implementing pagination and sorting.
What is the objective of JPA?
The introduction section of the JPA specification states: “The technical objective of this work is to provide an object/relational mapping facility for the Java application developer using a Java domain model to manage a relational database.”
What is the difference between Hibernate and Spring data JPA?
Hibernate is a JPA implementation, while Spring Data JPA is a JPA Data Access Abstraction. Spring Data offers a solution to GenericDao custom implementations. Hibernate provides a reference implementation of the Java Persistence API that makes it a great choice as an ORM tool with benefits of loose coupling.
Is JPA faster than JDBC?
It shows that JPA queries are 15% faster than their equivalent JDBC queries. Also, JPA criteria queries are as fast as JPQL queries, and JPA native queries have the same efficiency as JPQL queries.
Is JPA a framework?
By itself, JPA is not a tool or framework; rather, it defines a set of concepts that can be implemented by any tool or framework. While JPA’s object-relational mapping (ORM) model was originally based on Hibernate, it has since evolved.
Why do we use JPA?
JPA supports the large data sets, data consistency, concurrent use, and query capabilities of JDBC. Like object-relational software and object databases, JPA allows the use of advanced object-oriented concepts such as inheritance. JPA avoids vendor lock-in by relying on a strict specification like JDO and EJB 2.
What is the difference between crud and JPA repository?