Oracle 1z0-898 Exam Practice Questions (P. 1)

Entity lifecycle callback methods may be defined in which three classes? (Choose three)

A developer wrote an entity class with the following method:
Private static Logger logger = Logger.getLogger ("myLogger");
@PrePersist
@PreUpdate
Public void doA () {
Logger.info ("A");
}
@PostPersist
@PostUpdate
Public void doB () {
logger.info ("B");
}
What will the log message contain when an application does the following?
1. Begins a transaction
2. Creates the entity
3. Persists the entity
4. Commits the transaction
5. Begins the entity data
6. Modifies the entity data
7. Merges the entity
8. Commits the second transaction

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)

An application that uses pessimistic locking calls an updateData method that results in a LockTimeoutException being thrown. What three statements are correct?
(Choose three)

A developer has created a deep entity class hierarchy with many polymorphic relationships between entitles. Which inheritance strategy, as defined by the inheritanceType enumerated type, will be most performed in this scenario?