![]() It is used to initialize the SessionFactory interface. Hibernate configuration file stores database-specific configurations. UpGrad’s Exclusive Software Development Webinar for you –Ĩ.What is the Hibernate configuration file? It is an Object-Oriented query language, independent of the database. – It defines the strategy needed for generating the primary key. – It specifies the column name in the database table. – It is used to specify a composite primary key in the entity bean. – It defines the primary key in the entity bean. The default value for this annotation is field. – It is used to specify the access type, field, or property. – It is used with entity beans to define the corresponding table name in a database. – It is used in combination with model classes for declaring them as entity beans. Here are seven of the most important JPA annotations: Hibernate supports JPA annotations along with many other annotations that you can access via the package. 3.What Are The Important JPA Annotations Used For Hibernate Mapping? The advantage of using JPA annotations is that they allow you to write implementation independent code. All JPA specifications are defined using annotations in the javax.persistence package. You can access JPA classes and interfaces from the javax.persistence package. Java Persistence API (JPA) is a specification that allocates standards and functionalities to ORM tools. The aim of ORM is to simplify data creation, data access, and data manipulation.Ĭheck out upGrad’s Advanced Certification in Cloud Computing Explore Our Software Development Free Courses ORM (Object Relational Mapping) refers to a technique of mapping objects with the data stored in a database. Hibernate Interview Questions & Answers 1.What is ORM? Earn Executive PG Programs, Advanced Certificate Programs, or Masters Programs to fast-track your career. Now that you have some background knowledge of Hibernate, let’s get to know this ORM tool a little better with these X Hibernate Interview questions!Įnroll in Software development Courses from the World’s top Universities. Also, Hibernate Persistence API is excellent for CRUD operations. It is extensively used for developing Java-based enterprise applications for database operations. Today, Hibernate boasts of being one of the most widely used ORM tools for Java applications.Ĭheck out upGrad’s Advanced Certification in Blockchain Originally, Hibernate was designed to serve as a simpler and better alternative of EJB2 (Enterprise Java Beans version 2). We can use Hibernate persistence API for CRUD operations Hibernate offers reference implementations of Java Persistence API which makes it a fantastic choice for ORM (Object Relational Mapping). ![]() We at tutorialspoint wish you best luck to have a good interviewer and all the very best for your future endeavor.Hibernate also extends data query and retrieval services. So just feel confident during your interview. Second it really doesn't matter much if you could not answer few questions but it matters that whatever you answered, you must have answered with confidence. ![]() If you are fresher then interviewer does not expect you will answer very complex questions, rather you have to make your basics concepts very strong. Use it for reference data only.įurther you can go through your past assignments you have done with the subject and make sure you are able to speak confidently on them. Read-only − A concurrency strategy suitable for data which never changes. Use this strategy if data hardly ever changes and a small likelihood of stale data is not of critical concern. Nonstrict-read-write − This strategy makes no guarantee of consistency between the cache and the database. Read-write − Again use this strategy for read-mostly data where it is critical to prevent stale data in concurrent transactions,in the rare case of an update. Transactional − Use this strategy for read-mostly data where it is critical to prevent stale data in concurrent transactions,in the rare case of an update. If you are going to enable a second-level cache, you will have to decide, for each persistent class and collection, which cache concurrency strategy to use. A concurrency strategy is a mediator which responsible for storing items of data in the cache and retrieving them from the cache.
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