Spring Data JPA

What is the main goal of Object-Relational Mapping (ORM)?

• Encrypt data in the database

• Map Java objects to database tables

• Convert Java to SQL manually

• Replace SQL completely

Which annotation is used to mark a class as a JPA entity?

• @Bean

• @Entity

• @Component

• @Table

What does @Table(name="employee") specify in an entity class?

• Database name

• Column name

• Table name

• Schema name

What is the purpose of @Column(name="emp_id")?

• It maps an entity to a table

• It maps a field to a specific column in the table

• It sets primary key

• It defines table constraints

Which annotation marks a field as the primary key in a JPA entity?

• @Column

• @GeneratedValue

• @Id

• @PrimaryKey

Which JPA strategy allows the database to automatically generate primary key values?

• AUTO_INCREMENT

• @Generated

• GenerationType.IDENTITY

• @AutoKey

Which method in EntityManager is used to save a new entity to the database?

• store()

• insert()

• persist()

• save()

What does the EntityManager.find() method do?

• Deletes the entity

• Retrieves an entity by its primary key

• Updates the entity

• Maps table to class

Which of the following is NOT a valid GenerationType in JPA?

• IDENTITY

• AUTO

• SEQUENCE

• UUID

What is the default fetch type for @ManyToOne relationships in JPA?

• LAZY

• EAGER

• DEFAULT

• NONE