Hibernate Objective Questions and Answers

Master Hibernate fundamentals with carefully curated multiple-choice questions covering Session lifecycle, ORM concepts, caching, dirty checking, configuration, logging, and mapping strategies.

Practice Hibernate MCQs with Detailed Explanations

Answer at least 12 questions to submit and verify answers.

1 What does the Session object hold?

First Level Cache

Second Level Cache

Both A & B

None of the above

2 Which ways are used by the Log4j and Logback frameworks in hibernate framework to support logging?

By log4j.xml file

By log4j.properties

Both A & B

None of the above

3 In case of Table per Concrete class, there will be three tables in the database having no relations to each other. Which are the ways to map the table?

By union-subclass element

By self-creating the table for each class

Both A & B

None of the above

4 Which of these simplifies an Object Relational Mapping tool?

Data creation

Data manipulation

Data access

All mentioned above

5 What is dirty checking in Hibernate?

object state changes in order to synchronize the updated state with the database

remove the dirty data from data base.

check the data when insert into data base.

None

6 What does session.evict() method do?

remove the object and its collections from the first level cache

remove the object and its collections from the second level cache

remove the object and its collections from the data base

None of the above

7 Which statement is correct?

Only the Session that you obtained with sf.getCurrentSession() is flushed and closed automatically

Only the Session that you obtained with sf.openSession() is flushed and closed automatically

Only the Session that you obtained with sf.getNewSession() is flushed and closed automatically

None of the above

8 what does hibernate.hbm2ddl.auto create this means?

create tables automatically

create session object automatically

create Sessio Factory object automatically

None

9 Is Hibernate Session threadsafe?

Yes

no relation with thread

None

10 How can you make a property be read from the database but not modified in anyway?

By using the insert="false" and update="false" attributes.

By using the isinsert="false" and isupdate="false" attributes.

By using the isinsert="no" and isupdate="no" attributes.

None

11 which 2nd level cache is better in hibernate?

EHCache

GumoCache

DASCache

TestCache

12 In the elements of Hibernate architecture is a factory of session and client of ConnectionProvider,It holds second level cache (optional) of data?

ConnectionProvider

Session

SessionFactory

Transaction

13 Which of the following are most common configuration methods of Hibernate Configuation

Mapping files

Http.conf

XML Configuration hibernate.cfg.xml

Web.config

14 Which of the following is FALSE about Session in hibernate?

Session is a light weight non-threadsafe object.

You can share the session between threads.

Session represents a single unit-of-work with the database

Session is the primary interface for the persistence service

15 There are core interfaces are used in just about every Hibernate application. Using these interfaces, you can store and retrieve persistent objects and control transactions? A. Configuration interface B. Session interface C. Query and Criteria interfaces D. User Interface E. Configuration interface

A, B, D

A, B, C, E

A, B, C, D, E

16 Which of the following is not a Session method?

Session.save()

Session.remove()

Session.persist()

D. Session.load()

17 Which of the following is NOT a best practice for defining your Hibernate persistent classes?

You must have a default no-argument constructor for your persistent classes and there should be getXXX() (i.e accessor/getter) and setXXX( i.e. mutator/setter) methods for all your persistable instance variables.

You should implement the equals() and hashCode() methods based on your business key and it is important not to use the id field in your equals() and hashCode() definition if the id field is a surrogate key (i.e. Hibernate managed identifier). This is because the Hibernate only generates and sets the field when saving the object.

It is recommended to implement the Serializable interface. This is potentially useful if you want to migrate around a multi-processor cluster.

The persistent class should be final because if it is final then lazy loading can be used by creating proxy objects.

Hibernate Objective Questions and Answers

Practice Hibernate MCQs with Detailed Explanations

1 What does the Session object hold?

2 Which ways are used by the Log4j and Logback frameworks in hibernate framework to support logging?

3 In case of Table per Concrete class, there will be three tables in the database having no relations to each other. Which are the ways to map the table?

4 Which of these simplifies an Object Relational Mapping tool?

5 What is dirty checking in Hibernate?

6 What does session.evict() method do?

7 Which statement is correct?

8 what does hibernate.hbm2ddl.auto create this means?

9 Is Hibernate Session threadsafe?

10 How can you make a property be read from the database but not modified in anyway?

11 which 2nd level cache is better in hibernate?

12 In the elements of Hibernate architecture is a factory of session and client of ConnectionProvider,It holds second level cache (optional) of data?

13 Which of the following are most common configuration methods of Hibernate Configuation

14 Which of the following is FALSE about Session in hibernate?

16 Which of the following is not a Session method?

17 Which of the following is NOT a best practice for defining your Hibernate persistent classes?

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