1Z0-898 試験問題を無料オンラインアクセス

A developer who is designing entity classes to map a legacy database encounters a table called STUDENT_RECORD.
This table has two columns, STUDENT_ID and STUDENT_INFO_ID. The primary key of this table consists of both columns, and there is a unique constraint on each info column.
The STUDENT_ID column is foreign key to the STUDENT table and STUDENT_INFO_ID column is a foreign key to the STUDENT_DAT table.
What entity classes and relationships can the developer use to model these tables and relationship?(Choose two)

• A.Model the STUDENT table as a Student entity and the STUDENT-DATA table as a StudentData entity. Model the STUDENT-RECORD table as a StudentRecord entity. Create a bidirectional one-to-one relationship between the StudentRecord entity and bidirectional one-toone relationship between the Student Record entity and the Student Data entity.
• B.Model the STUDENT table as a Student entity and the STUDENT-DATA table as a StudentData entity. Model the Student-Records table as a student record entity. Create a many-toone one relationship from the StudentRecord entity to the student entity and many-to-one relationship from the StudentRecord entity entity to the Student entity and many-to-one relationship from the student entity to the StudentData entity and one-to-many relationship from the StudentData entity to the StudentRecord entity.
• C.Model the student table as a student entity and STUDENT_DATA table StudentData entity. Model the STUDENT_RECORDS table as bidirectional many-to-many relationship between the student entity on the student data entity.
• D.Model the STUDENT table as a Student entity and the STUDENT-DATA table as a StudentData entity. Model the STUDENT_RECORD table as a bidirectional one-to-one relationship between the student entity and the StudentData entity.

FooBean and BarBean are both EJB 3.0 stateless beans with container-managed transaction demarcation. All business methods in FooBean have transaction attribute REQUIRED, and all business methods in BarBean have transaction attribute REQUIRED_NEW. The business method foo in FooBean invokes the Business method bar in BarBean.
Given:
10.
Public class BarBean {
11.
public void bar () {
12.
throw new RuntimeException ("unexpected error . . . ");
13.
}}
Which is true about the method of invocation assuming execution reaches line 12?

• A.FooBean.foo method receives javax -ejb. EJBTtansactionRolledbackException.
• B.FooBean.foo method receives the original RuntimeException thrown from BarBean.bar method.
• C.The BarBean bean instance is in ready state for the next invocation.
• D.FooBean.foo method receives javax.ejb.EJBException.

Given the following code:
Public void create () {
try {
doA () {
} catch (PersistenceException e) {} try (doB) ();
} catch (PersistenceException e) {}
}
Calling method doA will cause an NonUniqueResultException to be thrown. Calling method doB will cause an EntityExistsException to be thrown.
What two options describe what will happen when the create method is called within an application ' uses container managed transactions? (Choose two)

• A.The current transaction will continue after doA executes.
• B.The current transaction will be marked for rollback when doA is called.
• C.Method doB will never be called.
• D.The current transaction will be marked for rollback when doB is called.
• E.The current transaction will continue after doB executes.

Given the following entity classes:
@Entity
@cacheable (true)
Public class A { . . . } @Entity
@cacheable (false)
Public class B { . . .}
@Entity
Public class C { . . . }
If the shared-cache-mode element of persistence.xml is set to ENABLE _SERVICE, which entities are cached when using a persistence provider that supports caching?

• A.A and C
• B.A, B, and C
• C.A and B
• D.A only

Consider a persistence application with following entity:
@Entity
Public class MyEntity {
@Column (name = "FIELDA_COLUMN")
int fieldA;
int fieldB;
int fieldC;
int fieldD;
An orm.xml is packaged in the application with the following contents:

Which two of following statement are true. (Choose two)

• A.fieldA is mapped to column FIELDA
• B.fieldB is mapped to column NEW_COLB
• C.fieldD is not a persistence attribute of MyEntity
• D.fieldD is a persistent attribute of MyEntity