Book Image

AWS Certified Database – Specialty (DBS-C01) Certification Guide

By : Kate Gawron
5 (1)
Book Image

AWS Certified Database – Specialty (DBS-C01) Certification Guide

5 (1)
By: Kate Gawron

Overview of this book

The AWS Certified Database – Specialty certification is one of the most challenging AWS certifications. It validates your comprehensive understanding of databases, including the concepts of design, migration, deployment, access, maintenance, automation, monitoring, security, and troubleshooting. With this guide, you'll understand how to use various AWS databases, such as Aurora Serverless and Global Database, and even services such as Redshift and Neptune. You’ll start with an introduction to the AWS databases, and then delve into workload-specific database design. As you advance through the chapters, you'll learn about migrating and deploying the databases, along with database security techniques such as encryption, auditing, and access controls. This AWS book will also cover monitoring, troubleshooting, and disaster recovery techniques, before testing all the knowledge you've gained throughout the book with the help of mock tests. By the end of this book, you'll have covered everything you need to pass the DBS-C01 AWS certification exam and have a handy, on-the-job desk reference guide.
Table of Contents (24 chapters)
1
Part 1: Introduction to Databases on AWS
Free Chapter
2
Chapter 1: AWS Certified Database – Specialty Overview
5
Part 2: Workload-Specific Database Design
12
Part 3: Deployment and Migration and Database Security
16
Part 4: Monitoring and Optimization
20
Part 5: Assessment
21
Chapter 16: Exam Practice

Understanding Performance Insights

Performance Insights allows you to view queries and database load in real time through a graphical interface. It is available for all RDS database engines, but is not available on the t3.small and lower instance classes.

Performance Insights is accessed directly from the RDS dashboard rather than via CloudWatch. It is not a standard feature and it must be enabled for each instance that you need. This can be done at instance provisioning or later, by modifying the instance and enabling Performance Insights, which will not incur any outage. Performance Insights is free for data stored for a maximum of 7 days, and it is chargeable if you need to keep data for a longer period.

The Performance Insights dashboard offers an overview graph that you can customize with any metrics you wish, and further down the page, you can see details for specific queries and database load. The following figure shows how you can add multiple metrics to the graph to...