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#1 2012-04-03 02:53:18

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Hibernate Interview Questions And Answers

Java Programing :: Hibernate (Java) Job Interview Questions and Answers

Hibernate Interview Questions and Answers will guide us now that Hibernate is an object-relational mapping (ORM) library for the Java language, providing a framework for mapping an object-oriented domain model to a traditional relational database. Hibernate solves object-relational impedance mismatch problems by replacing direct persistence-related database accesses with high_level object handling functions. Learn more about Hibernate bu this Hibernate Interview Questions with Answers guide

1 ► What is Hibernate?
2 ► What is ORM?
3 ► What does an ORM solution comprises of?
4 ► What are the different levels of ORM quality?
5 ► What is a pure relational ORM?
6 ► Why do you need ORM tools like hibernate?
7 ► What is a meant by light object mapping?
8 ► What is a meant by medium object mapping?
9 ► What is meant by full object mapping?
10 ► What are the benefits of ORM and Hibernate?
11 ► What the Core interfaces are of hibernate framework?
12 ► What are Callback interfaces?
13 ► What should SessionFactory be placed so that it can be easily accessed?
14 ► What are POJOs?
15 ► What is object/relational mapping metadata?
16 ► What is HQL?
17 ► What are the most common methods of Hibernate configuration?
18 ► What are the important tags of hibernate.cfg.xml?
19 ► What are the Core interfaces are of Hibernate framework?
20 ► What role does the Session interface play in Hibernate?
21 ► What role does the SessionFactory interface play in Hibernate?
22 ► What is the general flow of Hibernate communication with RDBMS?
23 ► What is Hibernate Query Language (HQL)?
24 ► How do you map Java Objects with Database tables?
25 ► What Does Hibernate Simplify?
26 ► What is the difference between load() and get()?
27 ► What is the difference between and merge and update?
28 ► How do you define sequence generated primary key in hibernate?
29 ► Define cascade and inverse option in one-many mapping?
30 ► What does it mean to be inverse?
31 ► What do you mean by Named - SQL query?
32 ► How do you invoke Stored Procedures?
33 ► Explain Criteria API?
34 ► Define HibernateTemplate?
35 ► What are the benefits does HibernateTemplate provide?
36 ► How do you switch between relational databases without code changes?
37 ► If you want to see the Hibernate generated SQL statements on console, what should we do?
38 ► What are derived properties?
39 ► What is component mapping in Hibernate?
40 ► What is the difference between sorted and ordered collection in hibernate?
41 ► How will you configure Hibernate?
42 ► What is a SessionFactory? Is it a thread-safe object?
43 ► What is a Session? Can you share a session object between different theads?
44 ► What are the benefits of detached objects?
45 ► What are the pros and cons of detached objects?
46 ► How does Hibernate distinguish between transient (i.e. newly instantiated) and detached objects?
47 ► What is the difference between the session.get() method and the session.load() method?
48 ► What is the difference between the session.update() method and the session.lock() method?
49 ► How would you reatach detached objects to a session when the same object has already been loaded into the session?
50 ► What are the general considerations or best practices for defining your Hibernate persistent classes?
51 ► What does ORM consists of?
52 ► What are the ORM level?
53 ► How to avoid constraint violation exception parent key not found?

2012-04-03 02:53:18

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