Is Hibernate a tough topic for you? Then follow this article. Here we are providing you with the Hibernate Quiz through which the aspirants can gain confidence to face the interview. Also, many aspirants are unable to qualify the interviews due to the lack of practice quizzes. Moreover, contenders have to practice the Hibernate MCQ Online Test more frequently to gain an overview of the exam. We have provided the Hibernate Multiple Choice Questions in the below sections of this page. Thus, the contenders can learn the new topics from this post related to the Hibernate.
Hibernate Quiz Details
| Quiz Name | Hibernate |
| Category | Technical Quiz |
| Number of Questions | 23 |
| Time | No Time Limit |
| Exam Type | MCQ (Multiple Choice Questions) |
Here are some necessary details about the Hibernate Quiz. The above table states the overview of the quiz, the number of questions and time limit allocation in the exam. Moreover, aspirants those whoever is eagerly waiting to attend the Hibernate MCQ Online Test can check the below portions of the article.
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Hibernate MCQ Quiz Instructions
Candidates need to check the basic instruction that we are providing in this section. Moreover, to attend any online test aspirants have to follow some initial steps. So, here are some guidelines that every contender has to follow. Furthermore, before visiting the test aspirants need to know the pattern of the quiz and the instructions that you need to follow. In this Hibernate Quiz, candidates have 23 questions for 23 marks as mentioned in the above table. Nextly, no time limit allocated for the exam. Also, this is an MCQ type online test. Moreover, there are no negative marks in the quiz.
Hibernate Online Test
Which of the following is true about Hibernate?
A) It is a Java-based ORM framework
B) It is a database management system
C) It is a programming language
D) It is a web server
Answer: A) It is a Java-based ORM framework
Explanation: Hibernate is an open-source object-relational mapping (ORM) framework for the Java programming language. It provides a framework for mapping an object-oriented domain model to a traditional relational database.
What is the purpose of Hibernate SessionFactory?
A) To manage the persistence of objects
B) To create and manage database connections
C) To map Java objects to database tables
D) To execute database queries
Answer: B) To create and manage database connections
Explanation: The Hibernate SessionFactory is responsible for creating and managing database connections. It is a thread-safe, immutable cache of compiled mappings for a single database. Once created, the SessionFactory should be kept for the lifetime of the application.
What is the Hibernate Query Language (HQL)?
A) A programming language used to write Hibernate code
B) A database query language used by Hibernate to interact with the database
C) A language used to define database schema
D) A language used to define Java objects
Answer: B) A database query language used by Hibernate to interact with the database
Explanation: Hibernate Query Language (HQL) is an object-oriented query language that is used to interact with a database. It is similar to SQL, but it operates on persistent objects rather than tables. HQL is used to retrieve and manipulate data from a database using Hibernate.
What is the purpose of Hibernate Criteria API?
A) To write complex queries in HQL
B) To map Java objects to database tables
C) To create and manage database connections
D) To query the database using a programmatic approach
Answer: D) To query the database using a programmatic approach
Explanation: Hibernate Criteria API is a programmatic approach to querying the database using Hibernate. It allows developers to build up a query using a fluent API rather than writing HQL or SQL statements directly. This can make queries easier to read and write, especially for complex queries.
What is the purpose of Hibernate Session?
A) To create and manage database connections
B) To execute database queries
C) To map Java objects to database tables
D) To manage the persistence of objects
Answer: D) To manage the persistence of objects
Explanation: The Hibernate Session is responsible for managing the persistence of objects. It provides a way to interact with the database by storing and retrieving objects. The Session acts as a transactional boundary, so changes made to objects within a Session are not persisted until the Session is flushed or closed.
What is the purpose of Hibernate caching?
A) To improve the performance of database queries
B) To reduce the number of database connections
C) To improve the security of database connections
D) To manage the persistence of objects
Answer: A) To improve the performance of database queries
Explanation: Hibernate caching is used to improve the performance of database queries by reducing the number of database calls. It stores frequently accessed data in memory, so it can be retrieved more quickly. There are several levels of caching in Hibernate, including first-level cache, second-level cache, and query cache.
What is the difference between first-level and second-level cache in Hibernate?
A) First-level cache is a local cache while second-level cache is a shared cache
B) First-level cache is a shared cache while second-level cache is a local cache
C) First-level cache stores individual objects while second-level cache stores collections
D) First-level cache is used for read operations while second-level cache is used for both read and write operations
Answer: A) First-level cache is a local cache while second-level cache is a shared cache
Explanation: The first-level cache in Hibernate is a local cache that is associated with a particular Session. It stores individual objects that have been retrieved from the database. The second-level cache is a shared cache that is associated with a SessionFactory. It stores data that is shared across Sessions, such as collections and query results.
What is lazy loading in Hibernate?
A) A technique used to improve the performance of database queries
B) A technique used to reduce the number of database connections
C) A technique used to delay the loading of data until it is needed
D) A technique used to manage the persistence of objects
Answer: C) A technique used to delay the loading of data until it is needed
Explanation: Lazy loading is a technique used in Hibernate to delay the loading of data until it is actually needed. It can improve performance by avoiding the retrieval of unnecessary data from the database. Lazy loading is especially useful for loading large collections of objects or objects with many associations.
What is the purpose of Hibernate annotations?
A) To map Java objects to database tables
B) To write complex queries in HQL
C) To manage the persistence of objects
D) To query the database using a programmatic approach
Answer: A) To map Java objects to database tables
Explanation: Hibernate annotations are used to map Java objects to database tables. They provide a way to specify the mapping between Java classes and database tables, columns, and relationships. Annotations can be used instead of or in addition to XML mapping files.
What is the difference between @ManyToOne and @OneToMany annotations in Hibernate?
A) @ManyToOne is used to define a many-to-one relationship while @OneToMany is used to define a one-to-many relationship
B) @ManyToOne is used to define a one-to-many relationship while @OneToMany is used to define a many-to-one relationship
C) @ManyToOne is used for lazy loading while @OneToMany is used for eager loading
D) @ManyToOne is used for primary keys while @OneToMany is used for foreign keys
Answer: A) @ManyToOne is used to define a many-to-one relationship while @OneToMany is used to define a one-to-many relationship
Explanation: The @ManyToOne annotation is used to define a many-to-one relationship between two entities. It is typically used to define the side of the relationship that contains the foreign key. The @OneToMany annotation is used to define a one-to-many relationship between two entities. It is typically used to define the side of the relationship that contains the collection of related objects.
What is the purpose of @EmbeddedId annotation in Hibernate?
A) To define a composite primary key
B) To map a Java object to a database table
C) To define a one-to-many relationship
D) To enable lazy loading of a relationship
Answer: A) To define a composite primary key
Explanation: The @EmbeddedId annotation is used to define a composite primary key for an entity. It is typically used when a primary key consists of multiple columns in a database table. The composite primary key is represented as a separate object in the entity class.
What is the purpose of @Transactional annotation in Hibernate?
A) To define a transactional boundary for a method
B) To enable lazy loading of a relationship
C) To define a one-to-many relationship
D) To map a Java object to a database table
Answer: A) To define a transactional boundary for a method
Explanation: The @Transactional annotation is used to define a transactional boundary for a method. It is typically used to ensure that a method executes within a transactional context. If an exception is thrown during the execution of the method, the transaction is rolled back.
What is the purpose of Hibernate Criteria API?
A) To write complex queries in HQL
B) To enable lazy loading of a relationship
C) To map a Java object to a database table
D) To programmatically construct queries in Java
Answer: D) To programmatically construct queries in Java
Explanation: Hibernate Criteria API is used to programmatically construct queries in Java. It provides a type-safe and object-oriented approach to building queries. The Criteria API is useful when dynamic queries are required or when the query is complex and difficult to express in HQL.
What is the difference between Eager Loading and Lazy Loading in Hibernate?
A) Eager Loading loads all associated objects upfront while Lazy Loading loads associated objects on demand
B) Eager Loading loads associated objects on demand while Lazy Loading loads all associated objects upfront
C) Eager Loading and Lazy Loading are the same thing
D) Eager Loading and Lazy Loading are both used for primary keys
Answer: A) Eager Loading loads all associated objects upfront while Lazy Loading loads associated objects on demand
Explanation: Eager Loading is a strategy in Hibernate where all associated objects are loaded upfront. This can result in poor performance if there are many associated objects. Lazy Loading, on the other hand, is a strategy where associated objects are loaded on demand. This can improve performance by avoiding the retrieval of unnecessary data from the database.
What is the purpose of Hibernate Query Language (HQL)?
A) To map a Java object to a database table
B) To write complex queries in Java
C) To query the database using a programmatic approach
D) To write complex queries in Hibernate using an object-oriented syntax
Answer: D) To write complex queries in Hibernate using an object-oriented syntax
Explanation: Hibernate Query Language (HQL) is a language that is used to write complex queries in Hibernate using an object-oriented syntax. HQL queries are similar to SQL queries but are written using Java objects and properties rather than database tables and columns.
What is the purpose of the @SequenceGenerator annotation in Hibernate?
A) To define a sequence for generating primary keys
B) To map a Java object to a database table
C) To define a one-to-many relationship
D) To enable lazy loading of a relationship
Answer: A) To define a sequence for generating primary keys
Explanation: The @SequenceGenerator annotation is used to define a sequence for generating primary keys. It is typically used when a database does not provide an auto-incrementing primary key. The sequence is used to generate unique values for the primary key column.
What is the purpose of the Hibernate SessionFactory?
A) To manage Hibernate Sessions
B) To map Java objects to database tables
C) To provide a connection to the database
D) To enable lazy loading of a relationship
Answer: A) To manage Hibernate Sessions
Explanation: The Hibernate SessionFactory is used to manage Hibernate Sessions. It is typically created once for an application and is used to create new Sessions as needed. The SessionFactory manages the configuration of Hibernate and provides a cache for shared data.
What is the purpose of the @GeneratedValue annotation in Hibernate?
A) To generate primary keys automatically
B) To map a Java object to a database table
C) To define a one-to-many relationship
D) To enable lazy loading of a relationship
Answer: A) To generate primary keys automatically
Explanation: The @GeneratedValue annotation is used to generate primary keys automatically. It is typically used with the @Id annotation to specify how primary keys are generated. The @GeneratedValue annotation supports several different strategies for generating primary keys, including using a database sequence or an internal Hibernate sequence.
What is the purpose of Hibernate caching?
A) To improve the performance of queries by reducing the number of database calls
B) To map a Java object to a database table
C) To define a one-to-many relationship
D) To enable lazy loading of a relationship
Answer: A) To improve the performance of queries by reducing the number of database calls
Explanation: Hibernate caching is used to improve the performance of queries by reducing the number of database calls. Hibernate uses two levels of caching: first-level caching and second-level caching. First-level caching is used to cache objects within a Session, while second-level caching is used to cache objects across multiple Sessions.
What is the purpose of the Hibernate Session?
A) To manage the persistence of objects to the database
B) To map a Java object to a database table
C) To define a one-to-many relationship
D) To enable lazy loading of a relationship
Answer: A) To manage the persistence of objects to the database
Explanation: The Hibernate Session is used to manage the persistence of objects to the database. It is created from a SessionFactory and is used to save, update, and delete objects. The Session also provides a cache for storing persistent objects, and supports transactions to ensure data consistency.
About Hibernate
- Hibernate is an object-relational mapping tool for Java Programming language.
- Also, it provides a framework for mapping an object-oriented domain model to a relational database.
- Hence, this is the main reason that every IT Industry is concentrating on this tool.
Benefits of Practicing Hibernate Quiz
- Aspirants will learn a grip on the topic.
- Also, you will know about the topics and subtopics that are present in the exam.
- Candidates who practice this Quiz has handy notes of the concept.
- Aspirants will know Simple tricks in solving the Questions.
- Students can acquire confidence in the concept and how to solve problems.
How To Check Hibernate Programming Online Test Results
Soon after completing the test, you can review your results from the below sections. We provide you with instant results. Also, aspirants can check the quick explanation for each question you have answered. Hence, this reduces the mistakes in future. Also, many Multi-National Companies are hiring the candidates who have minimum Hibernate knowledge. So, candidates, those who are interested in choosing this field can immediately take part in the quiz. And, candidates can take the test for free of cost only through our website.
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