Spring 100-150

Which Lombok annotation combines @Getter, @Setter, @ToString, @EqualsAndHashCode, and @RequiredArgsConstructor?

• @Data

• @Compound

• @Bean

• @EntityComplete

When configuring a relational database in `application.properties` for Spring Data JPA, which property specifies the JDBC URL?

• spring.datasource.url

• spring.jpa.database-url

• spring.db.connection-string

• spring.jdbc.url

In a REST API, which HTTP method is typically used to delete a resource identified by a URI?

• DELETE

• REMOVE

• DROP

• ERASE

What is the role of an `EntityManager` in JPA?

• It is an API that manages the lifecycle of entities, including operations like persisting, finding, updating, and removing entities, and querying.

• It is a factory for creating database connections.

• It is an annotation to define an entity manager bean.

• It is a tool for generating entity classes from database tables.

If you want to ensure a specific field in your JPA entity is not null at the database level, which attribute of the `@Column` annotation would you use?

• nullable = false

• @NotNull

• required = true

• optional = false

When defining a one-to-one relationship in JPA, which annotation is used on the entity field representing the relationship?

• @OneToOne

• @SingleJoin

• @UniqueAssociation

• @ToOne

What is the purpose of a "join table" in the context of a many-to-many relationship in relational databases?

• To resolve a many-to-many relationship into two one-to-many relationships by having a table that links records from the two related tables.

• To store denormalized data for faster reads.

• To combine columns from multiple tables into a single view.

• To partition a large table into smaller ones.

If a REST API needs to accept complex data (e.g., a JSON object) in the request body for creating or updating a resource, which Spring MVC annotation is used on the controller method parameter?

• @RequestBody

• @RequestParam

• @ModelAttribute

• @BodyContent

Which Jackson annotation can be used to define different serialization views for an object, allowing selective exposure of fields?

• @JsonView

• @JsonFilter

• @JsonProfile

• @JsonOutput

When implementing custom exception handling with `@ControllerAdvice`, what is a common reason to create custom exception classes extending `RuntimeException`?

• To represent specific business rule violations or application-specific error conditions in a clear and typed manner.

• To ensure all exceptions are checked exceptions.

• To provide default error messages for all exceptions.

• To automatically log all exceptions to a specific file.