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Question ID 4576

The developer is creating a Java Persistence model for a legacy database. The database contains customer and subscriptions.
The subscriptions table has a foreign key to the Customer table, a foreign key to the magazines table, and a column that stores a java.util.Date (the subscription expiration date).
 
The developer wants to create entities Customer and subscription to model these tables and to represent the relationship between customer and subscription as a java.util.Map.
Which one of the following fields of the Customer entity accomplishes this task?
 

Option A

A.    @OneToMany
@joinColumn (name = “Customer - FK”) Map <Magzine, Data> subscriptions;
 

Option B

B.    @ElementCollection
Map <Magzine, Data> subscriptions
 

Option C

C.    @OneToMany
@JoinTable (name = “Subscriptions”) Map <Magzine, Data> subscriptions;
 

Option D

D.    @ElementCollection
@CollectionTable (name = “subscriptions”) Map <Magazine, Data> subscriptions
 

Option E

E.    @ElementCollection
@CollectionTable (Name = “Subscriptions”)
@Temporal (TemporalType.DATE) Map<magazine, date> subscriptions
 

Correct Answer E
Explanation


Question ID 4577

Refer to the Exhibit.
 
 
A developer wants to have bookingdata stored in the table BOOKING, flightnumber in table FLIGHTBOOKING, and hotel name in HOTELBOOKING.
Which code, inserted at line 11 of class Booking, is appropriate for his strategy?

Option A

A.    @Joined
 

Option B

B.    @SingleTable
 

Option C

C.    @TablePerClass
 

Option D

D.    @Inheritance (strategy = JOINED)
 

Option E

E.    @Inheritance (strategy = SINGLE_TABLE)
 

Option F

F.    @Inheritance (strategy = TABLE_PER_CLASS)
 

Correct Answer D
Explanation

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