Hibernate / JPA

Question 1

Benefits and risks of using Hibernate (hibernate)

Question 2

What is a SessionFactory? Is it a thread-safe object? (hibernate)

Question 3

SessionFactory vs Session / EntityManager vs EntityManagerFactory (hibernate/jpa)

Question 4

What is the difference between merge and update (hibernate)

Question 5

What is difference between merge and refresh (jpa)

Question 6

What is Hibernate Query Language/ Java Persistence Query Language (HQL/JPQL)? (hibernate/jpa)

Question 7

Lazy loading (hibernate/jpa)

Question 8

Describe concept of JPA (ex: EntityManager, EntityManagerFactory, PersistenceContext, PersistenceUnit) - (jpa)

Question 9

Describe annotation: @Temporal/@Transient/@Table/@Version? - (jpa)

Question 10

What do you mean by Named – SQL query and how to invoke it? (hibernate/jpa)

Question 11

What is the difference between sorted and ordered collection in hibernate? (hibernate/jpa?)

Question 12

Difference between get() and load() (hibernate)

Question 13

find() vs getReference() - (jpa)

Question 14

What are the entity states in Hibernate (hibernate - 3 states/jpa - 4 states (additional removed))

Question 15

Hierarchy-to-tables mapping strategies (hibernate/jpa)

Question 16

ORM incompatibility

Question 17

What are the Collection types in Hibernate ?

Question 18

Caching levels (hibernate/jpa)

Question 19

How to create own user type in hibernate? (hibernate)

Question 20

How is laziness One-To-Many implemented in hibernate (hibernate)

Question 21

What are the Collection types in Hibernate ?

Question 22

new features of jpa 2.1 - (jpa)

Question 23

Describe converters in Jpa 2.1 - (jpa)

Question 24

Statements order during flushing the session (hibernate)