Oracle Exam 1Z0-908 Topic 7 Question 89 Discussion

Actual exam question for Oracle's 1Z0-908 exam

Question #: 89
Topic #: 7

[All 1Z0-908 Questions]

Which condition is true about the use of the hash join algorithm?

ANo index can be used for the join.

BThe query must access no more than two tables.

CThe smallest of the tables in the join must fit in memory as set by join_buffer_size.

DAt least one of the tables in the join must have a hash index.

Show Suggested Answer

Suggested Answer: B

by Franklyn at Sep 16, 2024, 05:49 AM

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Flo

2 months ago

I don't know, guys. I'm leaning towards option A. No index can be used for the hash join, right? Seems like the most straightforward answer to me.

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Rene

26 days ago

Oh, I see. Thanks for clarifying that!

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Sabrina

1 months ago

Actually, the correct answer is option D. At least one of the tables in the join must have a hash index.

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Annalee

2 months ago

I think option A is correct. No index can be used for the hash join.

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Martin

2 months ago

Hmm, that makes sense too. I guess it depends on the specific scenario.

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Gerald

2 months ago

I disagree, I believe the answer is D) At least one of the tables in the join must have a hash index.

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Martin

2 months ago

I think the answer is C) The smallest of the tables in the join must fit in memory.

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Paris

2 months ago

Ha! I bet the hash join algorithm is as complicated as trying to figure out this question. But seriously, I think option C is the right choice.

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Vallie

26 days ago

User1: That could be true, having a hash index is important for hash join algorithm.

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Bobbye

28 days ago

User3: I'm not sure, but I think option D is also a possibility.

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Van

29 days ago

User2: I agree, the smallest table in the join must fit in memory.

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Marla

1 months ago

User1: I think option C is correct.

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Hildegarde

3 months ago

Hmm, I'm not sure about that. Doesn't the hash join algorithm require at least one of the tables to have a hash index? I think option D is the correct answer.

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Viola

2 months ago

Yes, option D seems to be the most accurate condition for the use of the hash join algorithm.

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Justine

2 months ago

That makes sense, having a hash index would be necessary for the hash join algorithm to work efficiently.

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Alberto

2 months ago

I think you're right, option D mentions that at least one of the tables in the join must have a hash index.

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Lajuana

3 months ago

Option C seems like the way to go! The smallest table needs to fit in memory for the hash join to work efficiently.

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Arletta

2 months ago

Yes, ensuring that the smallest table can fit in memory is essential for the hash join to perform well.

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Gerri

2 months ago

It's important to consider the memory size when using the hash join algorithm.

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Jerilyn

2 months ago

Having the smallest table fit in memory is definitely a key factor in optimizing the join operation.

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Frederica

2 months ago

I agree, option C is crucial for the hash join algorithm to work effectively.

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Derick

3 months ago

I agree, having the smallest table fit in memory is crucial for the hash join algorithm to work effectively.

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Mozell

3 months ago

Yes, that's correct. The smallest table needs to fit in memory for optimal performance.

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