Free Oracle 1Z0-898 Exam Dumps Questions & Answers

An entity person is mapped to a table PERSON and has a collection-valued persistence field otherUsedNames that stores names used by a person. The other used Names field is mapped to a separate table called NAMES. Which code fragment correctly defines such field?

• A.  @Element collection
  @ElementTable (name = "NAMES")
  Protected set<String> otherUsedNames = new HashSet () ;
• B.  @ElementCollection
  @SecondaryTable (names = "NAMES")
  Protected set<String> otherUsedNames = new HashSet () ;
• C.  @ElementCollection
  @CollectionTable(names = "Names")
  Protected set<String> otherUsedNames = new HashSet () ;
• D.  @ElementCollection (name = "NAMES")
  Protected set<String> otherUsedNames = new HashSet () ;

The developer wants to write a portable criteria query that will order the orders made by customer James Brown according to increasing quantity. Which one of the below queries correctly accomplishes that task?

• A.  CriteriaBuilder cb= . . .
  CriteriaQuery<order> cq = cb.createquery<order.class>
  Root <customer, order> 0 = cq.from(customer.class);
  Join <customer, order> 0 = c.Join(customer-.orders);
  cq.where (cb.equal(c.get(customer_.name, James Brown))); cq.select(0);
  cq.orderBy (0.get (order_.quantity));
• B.  CriteriaBuilder cb= . . .
  CriteriaQuery<order> cq = cb.createquery<order.class>
  Root <customer, order> 0 = cq.from(customer.class);
  Join <customer, order> 0 = c.Join(customer-.orders);
  cq.where (cb.equal(c.get(customer_.name, James Brown)));
  cq.orderBy (0.get (order_.quantity));
  cq.orderBy ("quantity");
• C.  CriteriaBuilder cb= . . .
  CriteriaQuery<order> cq = cb.createquery<order.class>
  Root <customer, order> 0 = cq.from(customer.class);
  Join <customer, order> 0 = c.Join(customer-.orders);
  cq.where (cb.equal(c.get(customer_.name, James Brown)));
  cq.orderBy (0.get (order_.quantity));
• D.  CriteriaBuilder cb= . . .
  CriteriaQuery<order> cq = cb.createquery<order.class>
  Root <customer, order> 0 = cq.from(customer.class);
  Join <customer, order> 0 = c.Join(customer-.orders);
  cq.where (cb.equal(c.get(customer_.name, James Brown)));
  cq.orderBy (0.get (order_.quantity));
  cq.select(0);

Given the following stateless session bean implementation classes:

Assuming no other transaction-related metadata, what are the transaction attributes on methodB, and methodC respectively?

• A.  MANDATORY, MANDATORY, and MANDATORY
• B.  REQUIRED, MANDATORY, andREQUIRES_NEW
• C.  MANDATORY, MANDATORY, <and REQUIRES__NEW
• D.  REQUIRED, REQUIRES_NEW, and REQUIRES_NEW

A developer needs to include a set of managed classes in a persistence unit. Which two solutions are correct? (Choose two.)

• A.  Place the class files in the orm.xml file.
• B.  Place the class files in any mapping file that is included on the classpath.
• C.  Place the class files in any jar on the classpath that is included in the persistence unit.
• D.  Place the class files in the root of the persistence unit.

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.  Other concurrent transactions may modify but MAY NOT delete the entity instances.
• B.  Other concurrent transactions may modify or delete the entity instances.
• C.  The current transaction may NOT modify or delete the entity instances.
• D.  Only the current transition may modify or delete the entity instances.