CST 8277 final Exam Questions and Correct Answers 100% Verified Graded A+

CST 8277 final Exam Questions and Correct Answers 100% Verified Graded A+

Question 1:

Given the code segment below, ??? should be replaced with what?



@Entity(name = "Student")

@Table(name = "student_table")

@NamedQuery(name = "Student_findAll", query = "SELECT s FROM ??? s")

public class StudentPoJo extends PoJoBase implements Serializable { ... }



A. student_table

B. Student

C. StudentPoJo

D. PoJoBase - B. Student




explain: The query is a JPQL (Java Persistence Query Language) query, and in JPQL, the FROM
clause should refer to the entity name defined by the @Entity annotation



Question 2:When writing JPA criteria queries, you may need to use what in order to complete the
queries?



A. JUnit test classes, for example, EmployeeTest, StudentTest

B. Classes that extend com.alongwith.privileges.cst8277.models.PoJoBase

, C. JPA metamodel classes, for example, studentPOJO_, professorPOJO_, coursePOJO_

D. EJB session beans, for example, studentEJB, professorEJB, courseEJB - C. JPA
metamodel classes, for example, studentPOJO_, professorPOJO_, coursePOJO_



explain: JPA criteria queries often use metamodel classes: POJOs



Question 3:If there is a field or property in your entity class database, you should annotate that
field or property with what if you do NOT want to map to a table column in your database?

A. @Basic

B. @Transient

C. @JsonIgnore

D. @DoNotMap - B. @Transient



explain: The @Transient annotation in JPA is used to mark a field or property so that it is not
persisted to the database (i.e., it won't map to a table column).



Question 4:What does the annotation below mean?



public class PoJoBase { @JsonInclude(JsonInclude.Include.NON_NULL) ...

}



A. Null values will not appear in the JSON representation of an instance of PoJoBase.

B. Only null values appear in the JSON representation of an instance of PoJoBase.