Oracle Exam 1Z0-900 Topic 4 Question 72 Discussion

Actual exam question for Oracle's 1Z0-900 exam

Question #: 72
Topic #: 4

[All 1Z0-900 Questions]

Given the code fragments:

Which action completes this composite primary key implementation?

AAdd @IdClass annotation at line 1.

BAdd @Embeddable annotation at line 1 and replace both @Id annotations with @EmbeddedId annotations.

CAdd @IdClass(ContactId.class) annotation at line 2.

DAdd @Embeddable annotation at line 1 and @EmbeddedId(ContactId.class) at line 2.

Show Suggested Answer

Suggested Answer: C, D

by Carmelina at Dec 24, 2023, 11:17 AM

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Anastacia

1 months ago

Option B looks like a good sandwich, but I don't think that's what the question is asking. Gotta stay focused, people!

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Marguerita

2 months ago

Option A? Really? Adding the @IdClass annotation at line 1? That's like trying to fix a leaky faucet with duct tape. Let's not go there, folks.

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Roslyn

28 days ago

We should consider using @Embeddable and @EmbeddedId annotations instead.

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Katina

1 months ago

I agree, using @IdClass at line 1 is not the best solution.

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Xochitl

1 months ago

No way, option A is definitely not the way to go.

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Sharee

2 months ago

I'm leaning towards Option C. Adding the @IdClass annotation at line 2 seems like the simplest solution. But I'll need to make sure the ContactId class is set up correctly.

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Fabiola

21 days ago

Let's go with Option C then. We can always verify the ContactId class before finalizing.

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Vilma

22 days ago

I agree, Option C looks like the best choice. We just need to double check the ContactId class.

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Galen

23 days ago

I think Option C is the way to go. It seems like the most straightforward solution.

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Bronwyn

2 months ago

But adding @Embeddable and @EmbeddedId seems unnecessary, so I still think B is the best choice.

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Melissa

2 months ago

I disagree, I believe the answer is D.

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Bronwyn

2 months ago

I think the correct answer is B.

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Merissa

2 months ago

But adding @Embeddable and @EmbeddedId seems unnecessary, I still think B is the best choice.

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Mozelle

2 months ago

I disagree, I believe the correct answer is D.

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Olene

2 months ago

Option D seems like the right choice here. The @Embeddable and @EmbeddedId annotations are the way to go for a composite primary key.

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Karan

1 months ago

Yes, @Embeddable and @EmbeddedId are used for composite primary keys.

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Samira

1 months ago

I think option D is correct.

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Julio

1 months ago

Yes, I agree. The @Embeddable and @EmbeddedId annotations are needed for a composite primary key.

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Wendell

2 months ago

I think option D is the correct choice.

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Eileen

2 months ago

Option B looks good, but I'm not sure about replacing the @Id annotations. I'll need to double-check the documentation on that.

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Rasheeda

23 days ago

Option C could work too, let's review the details before making a decision.

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Shenika

24 days ago

I'm leaning towards option C actually.

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Wynell

29 days ago

I agree, but we should definitely check the documentation to be sure.

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Nathalie

1 months ago

I think option B is the correct choice.

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Merissa

2 months ago

I think the correct answer is B.

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