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ACA-Database – ACA Database Certification

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Showing 1–3 of 10 questions

Question 1

Which of the following are the benefits of database views? (Number of correct answers: 3)

Select all that apply, then click Submit answer.

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    Simplicity for queries

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    Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users

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    Easier for data visualization

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    Stabilization of information: presents a consistent, unchanged image of the database structure


Question 2

Which of the following are NOT true, regarding DTS (Data Transmission Service)?

(Number of correct answers: 2)

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    The source and destination database must use the same database engine

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    The source and destination database must both have a database user which DTS can use

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    If the source database is not on Alibaba Cloud, it must be Internet accessible so that
    DTS can connect to it

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    DTS is designed for file synchronization


Question 3

Why is ApsaraDB for PolarDB better than other traditional database engines? (The number of answer: 3)

Select all that apply, then click Submit answer.

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    When you purchase a PolarDB cluster, you don't need to specify the storage capacity you want to purchase

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    PolarDB supports both OLTP and OLAP scenarios very well

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    The PolarDB database engine won't require you to replicate data when adding read-only nodes

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    ApsaraDB for PolarDB uses the pay-as-you-go billing method, therefore you only need to pay for the storage resources you actually use