Top 50 hibernate interview questions for freshers and experienced

1) Explain how jdbc works?

2) Explain ORM and its features?

3) Explain benefits of ORM over jdbc?

4) Name some of the ORM frameworks based on java?

5) What is hibernate?


6) Explain benefits of hibernate over jdbc?

7) Explain some of the interfaces of hibernate framework?

8) What is hibernate configuration file?

9) What is hibernate mapping file?

10) Explain Configuration interface?

11) Explain SessionFactory in hibernate ?

12) Explain Session in hibernate?

13) Explain transaction in hibernate?

14) What is Query in hibernate?

15) Is hibernate SessionFactory threadsafe?

16) Is hibernate Session thread safe?

17) Explain difference between openSession() and currentSession()?

18) What is dialect?

19) What are the three different states of a hibernate entity?

20) Explain different hibernate session methods?

21) Explain caching mechanism in hibernate?

22) Explain first level caching and by default which caching hibernate uses?

23) Explain hibernate second level caching?

24) Difference  between get() and load() in hibernate()?

25) Difference betweens save() and persist() methods in hibernate?

26) What happens if there is no-arg constructor defined in hibernate pojo?

27) Explain lazy loading in hibernate?

28) Explain different caching strategies available in hibernate?

29) Explain session.lock() method in hibernate?

30) Explain query level cache in hibernate?

31) Can we make hibernate entity class as final?

32) Why version property is used in hibernate?

33) Explain different types of inheritance in hibernate?

34) Difference between sorted collection and ordered collection?

35) Explain different collection types in hibernate?

36) Explain hql and its benefits?

37) What are native sql queries and how to execute them in hibernate?

38) Explain named sql queries and benefits?

39) Explain hibernate criteria and its benefits?

40) Explain the importance of show_sql attribute in hibernate?

41) Explain different types of associations in hibernate?

42) Explain cascading and different types of cascading in hibernate?

43) How to integrate hibernate and spring?

44) What is hibernate template class?

45) Which design patterns are used in hibernate framework?

46) Explain merge() method in hibernate?

47)Explain hibernate dirty checking feature and how can we disable it?

48) Explain different flush modes available in hibernate?

49) How to implement joins in hibernate?

50) Which element of hibernate is used to automatically generate the primary key values?