Introduction to AWS DynamoDB

Lab Details

1. This lab walks you through Amazon DynamoDB features. We will create a table in Amazon DynamoDB to store information and then query that information from the DynamoDB table.

2. Duration: 30 minutes

3. AWS Region: US East (N. Virginia) us-east-1

Introduction

What is AWS DynamoDB?

Definition

• DynamoDB is a fast and flexible NoSQL database designed for applications that need consistent, single-digit millisecond latency at any scale.it is a fully managed database and it supports both document and key value data models.

• It has a very flexible data model. This means that you don't need to define your database schema upfront. It also has reliable performance.

• DynamoDB is a good fit for mobile gaming, ad-tech, IoT and many other applications.

DynamoDB Tables

DynamoDB tables consist of 

• Items (Think of a row of data in a table).

• Attributes ((Think of a column of data in a table).

• Supports key-value and document data structures.

• Key= the name of the data.  Value= the data itself.

• Document can be written in JSON, HTML or XML.

DynamoDB- Primary Keys

• DynamoDB stores and retrieves data based on a Primary key

• DynamoDB also uses Partition keys to determine the physical location data is stored.

• If you are using a partition key as your Primary key, then no items will have the same Partition key.

• Composite Keys (Partition Key + Sort Key) can be used in Ccombination.

• Two items may have the same partition key, but must have a different sort key.

• All items with the same partition key are stored together and then sorted according to the sort key value.

• DynamoDB allows you to store multiple items with the same partition keys.

Architecture Diagram 

Lab Tasks

1. Log into AWS Management Console.

2. Create a DynamoDB table.

3. Insert data into that DynamoDB table.

4. Search for an item in the DynamoDB table.