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Alibaba Exam ACA-Developer Topic 7 Question 43 Discussion

Actual exam question for Alibaba's ACA-Developer exam
Question #: 43
Topic #: 7
[All ACA-Developer Questions]

What are the benefits of creating indexes on PolarDB? (Number of correct answers: 2)

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Suggested Answer: A, B, C

by Corinne at Jul 09, 2023, 07:29 PM

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Carolynn
2 months ago
Ooh, this is a tricky one. I'm going to guess A and C, because who doesn't love faster DDL ops? But I could be way off base here.
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Allene
1 months ago
User 3: I'm not sure, but I'll go with A and B just to mix it up.
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Leota
1 months ago
User 2: I agree, faster SELECT statements and DDL ops are always a plus.
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Janessa
1 months ago
User 1: I think A and C are correct.
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Aleta
3 months ago
I'm going to go with A and D. Reducing invalid data scans sounds like a nice perk of indexing.
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Lavonna
1 months ago
That's a good choice. Indexes can definitely help with those benefits.
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Terrilyn
2 months ago
D) Reduce invalid data scanning.
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Teresita
2 months ago
A) Improve the query efficiency SELECT statements.
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Rima
3 months ago
Haha, I bet the folks at PolarDB would say the benefits are 'polar' opposite of what we expect! But seriously, A and D are my picks.
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Xuan
1 months ago
It's important to consider both A and D when thinking about the benefits of indexes on PolarDB.
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Maile
2 months ago
Reducing invalid data scanning is also a great benefit of creating indexes.
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Cathern
2 months ago
I agree, creating indexes on PolarDB can really improve query efficiency.
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Rickie
3 months ago
I'm not sure about B - I thought indexes were mainly for improving read operations, not writes. But A and D definitely sound right.
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Margery
3 months ago
A and D seem like the clear winners here. Indexes are all about speeding up queries, so those make perfect sense.
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Ivan
3 months ago
So, creating indexes can make database operations faster overall.
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Scarlet
3 months ago
Yes, that's true. It can also improve the efficiency of DML operations like UPDATE.
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Ivan
3 months ago
I think creating indexes on PolarDB can improve query efficiency.
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Davida
3 months ago
I agree. It can also improve the efficiency of DML operations like UPDATE.
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Gussie
3 months ago
Yes, that's correct. Indexes help speed up SELECT statements.
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Reynalda
3 months ago
I think creating indexes on PolarDB can improve query efficiency.
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