1Z0-898 Questions and Answers

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Java EE 6 Java Persistence API Developer Certified Expert: 1Z0-898

Rating: 4.8

Vendor: Oracle

Certifications: Oracle Java

Exam Name: Java EE 6 Java Persistence API Developer Certified Expert

Exam Code: 1Z0-898

Total Questions: 63 Q&As

Last Updated: Dec 14, 2021

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1Z0-898 Online Practice Questions and Answers

Questions 1

Which two of the following statements are true of embeddable classes? (Choose two)

A. An embeddable class must not be used to represent the state of another embeddable class.

B. Null comparison operations over embeddable classes are not supported in the Java Persistence query language.

C. An embeddable class must not contain a relationship to an entity.

D. An embeddable class can be the key of a Map relationship.

Show Answer
Questions 2

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 MyEmbeddable1

B. MyEntity1, MyEmbeddable1, MyEntity2, and MyEmbeddable2

C. MyEntity1, MyEmbeddable1, and MyEntity2

D. MyEntity1 and MyEntity2

Show Answer
Questions 3

A named query that sets an exclusive pessimistic on the entities returned by the query by setting the NamedQuery lockMode element to LockModeType.PESSIMISTIC_FORCE_INCREMENT. The application starts transaction and executes the query.

Which of the following statements is correct about the entities returned by the query?

A. Only the current transition may modify or delete the entity instances.

B. The current transaction may NOT modify or delete the entity instances.

C. Other concurrent transactions may modify or delete the entity instances.

D. Other concurrent transactions may modify but MAY NOT delete the entity instances.

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