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You're reading from  AWS Certified Database – Specialty (DBS-C01) Certification Guide

Product typeBook
Published inMay 2022
PublisherPackt
ISBN-139781803243108
Edition1st Edition
Concepts
IT Certification
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Author (1)
Kate Gawron
Kate Gawron
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Kate Gawron

Kate Gawron is a full-time senior database consultant and part-time future racing driver. She was a competitor in Formula Woman, and she aspires to become a professional Gran Turismo (GT) racing driver. Away from the racetrack, Kate has worked with Oracle databases for 18 years and AWS for five years. She holds four AWS certifications, including the AWS Certified Database – Specialty certification as well as two professional Oracle qualifications. Kate currently works as a senior database architect, where she works with customers to migrate and refactor their databases to work optimally within the AWS cloud.
Read more about Kate Gawron

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Chapter 6

  1. 4

TTL will only help if it can remove older records; therefore, this won't immediately help and is incorrect.

DAX may improve performance but it is not the most cost-efficient option.

DynamoDB Streams will not help any performance issue.

Autoscaling is the correct answer, as the issue is a restriction of provisioned capacity units.

  1. 1

An item is 3 KB, so you need one RCU per two items in eventually consistent mode, and three WCUs per item as standard write. This gives you 50 RCUs and 30 WCUs.

  1. 4

25 GB is provided free for each account when using DynamoDB.

  1. 2

An LSI can only be provisioned when the table is created.

A GSI can contain different keys to the base table.

  1. 3

This error is seen when using DAX and not when using DynamoDB, so autoscaling won't help.

This error is seen when using DAX and not when using DynamoDB, so on-demand won't help.

This is a DAX throttling error...

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AWS Certified Database – Specialty (DBS-C01) Certification Guide
Published in: May 2022Publisher: PacktISBN-13: 9781803243108
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Kate Gawron

Kate Gawron is a full-time senior database consultant and part-time future racing driver. She was a competitor in Formula Woman, and she aspires to become a professional Gran Turismo (GT) racing driver. Away from the racetrack, Kate has worked with Oracle databases for 18 years and AWS for five years. She holds four AWS certifications, including the AWS Certified Database – Specialty certification as well as two professional Oracle qualifications. Kate currently works as a senior database architect, where she works with customers to migrate and refactor their databases to work optimally within the AWS cloud.
Read more about Kate Gawron

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