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Alibaba Exam ACA-Operator Topic 3 Question 62 Discussion

Actual exam question for Alibaba's ACA-Operator exam
Question #: 62
Topic #: 3
[All ACA-Operator Questions]

When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)

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Suggested Answer: A, C, D

by Lashawn at Jun 19, 2024, 11:41 AM

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Jeniffer
4 months ago
B? Are you kidding me? That's like saying the more records you have, the more indexes you should add. It's like trying to organize a messy room by buying more shelves - it's just gonna make it worse!
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Kanisha
4 months ago
Definitely A, D, and E. Indexing is the secret sauce of databases, but like any good sauce, you don't want to drown the whole dish in it. Moderation is key!
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Nguyet
4 months ago
Hmm, I'd say A, D, and E. Indexing is great, but you don't want to overdo it. This is like trying to find the perfect haircut - not too much, not too little, just right.
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Cory
3 months ago
Yeah, you don't want to go overboard with indexing.
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Margart
3 months ago
I agree, A, D, and E are the way to go.
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Brittni
4 months ago
I believe option E is important too, as using composite indexes efficiently can optimize query performance.
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Annabelle
4 months ago
I agree with Dewitt. Option D also makes sense as indexing fixed length fields can speed up data retrieval.
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Carole
4 months ago
A, D, and E. Indexing improves query performance, but too many indexes can slow down write operations. Gotta strike the right balance!
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Malcom
4 months ago
Yes, too many indexes can definitely slow down write operations. It's all about finding the right balance.
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Delsie
4 months ago
A, D, and E are the correct options. Indexing is important for query performance.
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Dewitt
4 months ago
I think option A is a good practice because it helps improve query performance without impacting data modification operations.
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