JPA/JPA MCQ Sample Test,Sample questions

Question:

 What are the JPA @Entity association attributes?

1.Association validation

2.Association multiplicity

3.Association cascade behavior

4.Association direction

Answer:1

Posted Date:-2022-09-20 08:11:21

Question:

 What is TRUE about the cascading and cascade mode attributes in Entity Beans?

1. Cascade mode attributes can be specified for the association annotaions (like @OneToMany) in an entity bean

2.The cascading direction is from the target entity to the source entity

3. Refresh cascade causes to refresh the target entities of a relationship when refresh is invoked on the source entity of the relationship

4.PERSIST, DELETE and REFRESH are cascading mode attributes

Answer:1

Posted Date:-2022-09-20 08:30:53

Question:

 What's true about the following @Entity association between House and Window?
@Entity
public class Window {
	@Id
	private int winNo;
	@ManyToOne
	private House aHouse;
}
@Entity
public class House {
	@Id
	private int houseNo;
	@OneToMany(mappedBy="aHouse")
	private List windows;
}

1. It's OneToMany unidirectional association

2.It's OneToMany bidirectional association

3.The association owner is the House class

4.The association owner is the Window class

Answer:2

Posted Date:-2022-09-20 08:20:05

Question:

JPA implementation is provided by ---?

1.Hibernate

2.Toplink

3.Ibatis

4.All of them

Answer:4

Posted Date:-2022-09-20 08:13:14

Question:

Object/relational metadata can be specified directly in the entity class file by using annotations, or in a separate ________ descriptor file distributed with the application.

1.Scalable Vector Graphics

2.HTML

3.XML

4.XHTML

Answer:1

Posted Date:-2022-09-20 08:25:04

Question:

What is the JPA equivalent of hibernate.cfg.xml file?

1.configuration.xml

2.persistence.xml

3.jpa.configuration.xml

4.jpa.configuration.xml

Answer:2

Posted Date:-2022-09-20 08:34:05

Question:

What is the Life Cycle Of A Jpa Entity?

1.New / Transient

2.Managed / Persisted

3.Detached

4. All of the above

Answer:4

Posted Date:-2022-09-20 08:17:37

Question:

Which annotation is used to create Pk-Fk relation b/w two tables?

1.JoinColumn

2.ForeignKey

3.JoinedKey

4.None of these

Answer:1

Posted Date:-2022-09-20 08:22:57

Question:

Which attribute of @OneToMany is used to mark an entity as owned?

1.cascade

2.mappedBy

3.propertyRef

4.None of the above

Answer:2

Posted Date:-2022-09-20 08:32:03

Question:

______ has stated that ideas came from several frameworks, including Hibernate and JDO.

1.Sun Microsystems

2.Java (software platform)

3.Open JDK

4.Java (programming language)

Answer:3

Posted Date:-2022-09-20 08:15:51