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)

AImprove the query efficiency SELECT statements.

BImprove the efficiency of DML operations such as UPDATE.

CImprove the efficiency of DDL operations.

DReduce invalid data scanning.

Show Suggested Answer

Suggested Answer: A, B, C

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

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Margery

5 hours 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

5 days ago

So, creating indexes can make database operations faster overall.

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Scarlet

6 days ago

Yes, that's true. It can also improve the efficiency of DML operations like UPDATE.

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Ivan

7 days ago

I think creating indexes on PolarDB can improve query efficiency.

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Davida

8 days ago

I agree. It can also improve the efficiency of DML operations like UPDATE.

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Gussie

10 days ago

Yes, that's correct. Indexes help speed up SELECT statements.

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Reynalda

11 days ago

I think creating indexes on PolarDB can improve query efficiency.

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