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Table of contents
Amazon Ec2 And On-Premises Databases
Amazon RDS and Amazon EC2
DB instances
DB engines
DB instance classes
DB instance storage
Amazon Virtual Private Cloud (Amazon VPC)
AWS Regions and Availability Zones
Monitoring an Amazon RDS DB instance
What are the several ways to interact with Amazon RDS?
How are you charged for Amazon RDS?
What familiar database engines does Amazon RDS provide?
How many DB instances can I run with Amazon RDS?
Why is RDBMS called relational?
Last Updated: Mar 27, 2024

Amazon Relational Database Service

Author Komal Shaw
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Amazon RDS (Amazon Relational Database Service) is a web service that makes it easy to set up, administer, and scale a relational database in the Amazon Web Services Cloud. It performs basic database administration duties while providing cost-effective, resizable capacity for an industry-standard relational database.

Amazon Ec2 And On-Premises Databases

Amazon Elastic Compute Cloud (Amazon EC2) is an AWS Cloud service that provides scalable computing power. Amazon EC2 eliminates the requirement for upfront hardware investment, allowing you to develop and deploy applications more quickly.

You receive CPU, RAM, storage, and IOPS all packed together when you buy an on-premises server. These are split apart with Amazon EC2 so that you can scale them independently. You can efficiently allocate more CPU, fewer IOPS, or more storage if necessary.

You are fully responsible for the server, operating system, and software when using a relational database on an on-premises server. AWS maintains the layers beneath the operating system for a database on an Amazon EC2 instance. In this approach, Amazon EC2 relieves some of the administrative work.

The Amazon EC2 service isn't thoroughly managed. As a result, user errors are more likely when you operate a database on Amazon EC2. When you manually update the operating system or database software, for example, you may inadvertently create application downtime. You might spend hours verifying every change to discover and fix an issue.

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Amazon RDS and Amazon EC2

Amazon RDS is a Database service that Amazon administers. It is in charge of the majority of managerial tasks. Amazon RDS frees you to focus on your application and users by reducing time-consuming manual chores. We recommend using Amazon RDS for most database deployments instead of Amazon EC2.

Compared to database deployments that aren't fully managed, Amazon RDS offers the following advantages:

You can use MySQL, MariaDB, PostgreSQL, Oracle, and Microsoft SQL Server, which you are already familiar with.

Backups, software patching, automatic failure detection, and recovery are all handled by Amazon RDS.

You have the option of enabling automated backups or manually creating backup snapshots. These backups can be used to restore a database. The Amazon RDS restoration method is dependable and quick.

You can achieve high availability with a primary instance and a synchronous secondary instance that you can failover to when problems arise. Read replicas can also be used to boost read scaling.

You can help manage who may access your RDS databases by utilizing AWS Identity and Access Management (IAM) to establish users and permissions in addition to the security in your database package. You can also put your databases in a virtual private cloud to help protect them (VPC).

DB instances

In the AWS Cloud, a DB instance is a separate database environment. The DB instance is the most basic component of Amazon RDS.

One or more user-created databases can be found in your DB instance. You can use the same tools and apps to access your DB instance as you would with a standalone database instance. The AWS Command Line Interface, the Amazon RDS API, and the AWS Management Console can all be used to build and edit DB instances.

DB engines

The relational database software that operates on your DB instance is known as a DB engine. Amazon RDS currently supports the following engines:

  1. MySQL
  2. MariaDB
  3. PostgreSQL
  4. Oracle

Microsoft SQL Server is a database management system.

Each DB engine has its own set of supported functionalities, and each DB engine version may contain additional functions. In addition, each DB engine includes a set of parameters called DB parameter groups that regulate how the databases it manages behave.

DB instance classes

The DB instance class determines a DB instance's processing and memory capacity. The DB instance type and size are included in a DB instance class. Each instance type has its own set of computation, memory, and storage resources. Db.m6g.2xlarge is a DB instance class, while db.m6g.2xlarge is a general-purpose DB instance type powered by AWS Graviton2 processors.

DB instance storage

Amazon EBS allows you to attach durable, block-level storage volumes to a running instance. The following are the several types of DB instance storage:

  1. General Intentions (SSD)
  2. IOPS provisioned (PIOPS)
  3. Magnetic

The performance attributes and prices of the various storage types vary. You may adapt the performance and cost of your storage to your database's requirements.

Depending on the storage type and database engine it supports, each DB instance has minimum and maximum storage requirements. It's critical to have enough storage so that your databases can expand. Furthermore, sufficient storage ensures that the DB engine's features have enough space to write content or log entries.

Amazon Virtual Private Cloud (Amazon VPC)

The Amazon Virtual Private Cloud (Amazon VPC) service allows you to run a database instance on a virtual private cloud (VPC). You have complete control over your virtual networking environment when you use a VPC. You have complete control over your IP address range, subnets, and routing and access control lists. Whether Amazon RDS is running in a VPC or not, the essential functionality remains the same. Backups, software patching, automatic failure detection, and recovery are all handled by Amazon RDS. It costs nothing more to run your database instance in a VPC. Network Time Protocol (NTP) is used by Amazon RDS to synchronize the time on DB Instances.

AWS Regions and Availability Zones

Amazon's cloud computing capabilities are hosted in a variety of high-availability data centre sites across the world (for example, North America, Europe, or Asia). An AWS Region is the name given to each data center location.

Availability Zones, or AZs, are unique locations inside each AWS Region. Each Availability Zone is designed to be insulated from other Availability Zones' failures. Each is designed to provide low-cost, low-latency network connectivity to other AWS Region Availability Zones. You may safeguard your applications from a single location failure by running instances in several Availability Zones.

A Multi-AZ deployment allows you to run your database instance in multiple Availability Zones. When you select this option, Amazon creates and manages one or more secondary standby DB instances in a different Availability Zone on your behalf. Each secondary DB instance is replicated from your primary DB instance across Availability Zones. This method allows for data redundancy and failover, as well as the elimination of I/O freezes and the reduction of latency spikes during system backups. The secondary DB instances in a Multi-AZ DB clusters deployment can also support read traffic.


A database instance's access is controlled by a security group. It accomplishes this by granting access to specified IP address ranges or Amazon EC2 instances.

Monitoring an Amazon RDS DB instance

You can monitor the performance and health of a database instance in a number of ways. The Amazon CloudWatch service can be used to keep track of a database instance's performance and health. The Amazon RDS console displays CloudWatch performance charts. You can also listen to Amazon RDS events to be notified when a database instance, database snapshot, database parameter group, or database security group changes.


What are the several ways to interact with Amazon RDS?

  1. AWS Management Console
  2. Command-line interface
  3. Programming with Amazon RDS

How are you charged for Amazon RDS?

When you use Amazon RDS, you can choose to use on-demand DB instances or reserved DB instances.

What familiar database engines does Amazon RDS provide?

Amazon Aurora, PostgreSQL, MySQL, MariaDB, Oracle Database, and SQL Server.

How many DB instances can I run with Amazon RDS?

40 Amazon RDS DB instances

Why is RDBMS called relational?

Because the values within each table are related to each other. 


In this article, we have extensively discussed the Amazon Relational Database Service. We hope that this blog has helped you enhance your knowledge regarding Amazon Relational Database Service.

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