다운로드 Oracle : 1Z0-898 질문 & 답 PDF & Test Software

어떤 학습 자료를 선택해야 할지 고민되신다면 무료 샘플부터 확인해 보시기 바랍니다. PassTIP은 1Z0-898 샘플 문제를 무료로 제공하고 있어 Oracle Java EE 6 Java Persistence API Developer Certified Expert 대비 자료의 품질을 직접 판단하실 수 있습니다.

Oracle 1Z0-898 시험 개요:

Oracle 1Z0-898 시험 요강 주제:

Oracle Java EE 6 Java Persistence API Developer Certified Expert 관련 궁금증을 해결해 드립니다

최신 Oracle Solaris 1Z0-898 무료샘플문제

문제 #1

An application has two entities, Department and Employee, and there is a one-to-many relationship between them. The application has the following query:
SELECT d
FROM Department d LEFT JOIN FETCH d. employees
WHERE d.name = : name
After receiving the results of the query, the application accesses the returned department's Employee entities stored in the Department.employees collection-valued attribute.
All caching has been turned off in the application.
Which statement is true?

A. The database will be accessed once during the query execution phase, and once for each Employee entity in Department - employees.
B. The database will be accessed once during the query execution phase ONLY.
C. The database will be accessed once during the query execution phase, and once when the department.employees collection-valued attribute is used.
D. The database will be accessed once during the query execution phase, once when the Department. Employees collection-valued attribute is used, and once for each employee entity in the Department.employees.

문제 #2

Which EntityManager API will lock entity x with a pessimistic lock?

A. em.lock(x, LockModeType.PESSIMISTIC_READ)
B. em.lock(x, LockModeType.PESSIMISTIC)
C. em.lock(x, LockModeType.OPTIMISTIC_FORCE_INCREMENT)
D. em.lock(x, LockModeType.WRITE)

문제 #3

An application has two entities, parson and Address.

The application calls the DeletePersonsByStatus named query.
Which of the following is true?

A. The DeletePersonsByStatus named query is ill-formed, and will be rejected by the persistence provider.
B. The person entities are removed, but NOT their related address entities.
C. The person entities, and all their related address entities, are removed.
D. The named query will fall.

문제 #4

An application has three entities: the mapped superclass person class entity, and the parent and child entities, which are subclasses of person.
The application has created four entity Instances:
-Person1 is a Person entity with a primary key of 50 -Parent1is a Parent entity with a primary key of 100 -Child1 is a chi id entity with a primary key of 400 -Child2 is a child entity with a primary key of 600
Caching has been enabled in the persistence unit, the persistence provider supports caching, and none of entities have the Cacheable annotation applied, or a cacheable XML element in persistence.xml.
The application executes the following code:
Cache cache = . . . ;
Cache.evict(person.class)
Boolean result = cache.contains (Child.class, 400);
Assume there is no concurrent activity involving the cache. Which two statements are correct? (Choose two)

A. Result is false
B. Only person1 will be removed from cache.
C. Result is true
D. Person1, parent1, child1, and child2 will be removed from cache.

문제 #5

Consider the following web application:

Here MyEntity1.class and MyEntity2.class are annotated with @Entity and MyEmbeddable1-class and MyEmbeddable2-class are annotated with @Embeddable. MyPU is container managed. Which of the following represents set of classes considered managed by MyPU?

A. MyEntity1 and MyEntity2
B. MyEntity1, MyEmbeddable1, and MyEntity2
C. MyEntity1, and MyEmbeddable1
D. MyEntity1, MyEmbeddable1, MyEntity2, and MyEmbeddable2

질문과 대답: