Creating a DynamoDB table in AWS - Visual Walkthrough

Process Flow - Creating a DynamoDB table

Start

↓

Define Table Name

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Set Attribute Definitions

↓

Set Key Schema

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Set Provisioned Throughput

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Call CreateTable API

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Wait for Table Active

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Table Ready to Use

↓

End

This flow shows the steps to create a DynamoDB table: define name, attributes, keys, throughput, call API, wait until active, then use.

Execution Sample

AWS

aws dynamodb create-table \
  --table-name MusicCollection \
  --attribute-definitions AttributeName=Artist,AttributeType=S AttributeName=SongTitle,AttributeType=S \
  --key-schema AttributeName=Artist,KeyType=HASH AttributeName=SongTitle,KeyType=RANGE \
  --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5

This command creates a DynamoDB table named MusicCollection with Artist as the partition key and SongTitle as the sort key.

Process Table

Step	Action	Parameters	API Call Result	State Change
1	Define Table Name	MusicCollection	N/A	TableName set to MusicCollection
2	Set Attribute Definitions	Artist (S), SongTitle (S)	N/A	Attributes defined
3	Set Key Schema	Artist as HASH, SongTitle as RANGE	N/A	Key schema set
4	Set Provisioned Throughput	Read=5, Write=5	N/A	Throughput set
5	Call CreateTable API	Parameters from above	Table status: CREATING	Table creation started
6	Wait for Table Active	Polling table status	Table status: ACTIVE	Table ready to use
7	End	N/A	N/A	Creation complete

💡 Table status becomes ACTIVE, creation process ends.

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	After Step 5	After Step 6	Final
TableName	undefined	MusicCollection	MusicCollection	MusicCollection	MusicCollection	MusicCollection	MusicCollection	MusicCollection
AttributeDefinitions	undefined	undefined	[Artist:S, SongTitle:S]	[Artist:S, SongTitle:S]	[Artist:S, SongTitle:S]	[Artist:S, SongTitle:S]	[Artist:S, SongTitle:S]	[Artist:S, SongTitle:S]
KeySchema	undefined	undefined	undefined	[Artist:HASH, SongTitle:RANGE]	[Artist:HASH, SongTitle:RANGE]	[Artist:HASH, SongTitle:RANGE]	[Artist:HASH, SongTitle:RANGE]	[Artist:HASH, SongTitle:RANGE]
ProvisionedThroughput	undefined	undefined	undefined	undefined	[Read=5, Write=5]	[Read=5, Write=5]	[Read=5, Write=5]	[Read=5, Write=5]
TableStatus	undefined	undefined	undefined	undefined	undefined	CREATING	ACTIVE	ACTIVE

Key Moments - 3 Insights

Why do we need to wait after calling CreateTable before using the table?

Because the table status is initially CREATING (see step 5 in execution_table). We must wait until the status changes to ACTIVE (step 6) before the table can be used.

What is the difference between AttributeDefinitions and KeySchema?

AttributeDefinitions define the data types of attributes (step 2), while KeySchema specifies which attributes are the primary keys (partition and sort keys) used to organize the table (step 3).

What happens if we set ProvisionedThroughput too low?

If throughput is too low (step 4), the table may throttle requests or perform slowly. It's important to set appropriate Read and Write capacity units.

Visual Quiz - 3 Questions

Look at the execution_table at step 5, what is the TableStatus immediately after calling CreateTable API?

A ACTIVE

B CREATING

C DELETING

D UPDATING

💡 Hint

Check the 'API Call Result' column at step 5 in execution_table.

At which step does the table become ready to use?

A Step 4

B Step 5

C Step 6

D Step 7

💡 Hint

Look for when TableStatus changes to ACTIVE in execution_table.

If you change the ProvisionedThroughput to Read=10, Write=10, which variable_tracker row changes?

A ProvisionedThroughput

B KeySchema

C TableName

D AttributeDefinitions

💡 Hint

Check the ProvisionedThroughput row in variable_tracker.

Concept Snapshot

Create a DynamoDB table by specifying:
- TableName (unique name)
- AttributeDefinitions (name and type)
- KeySchema (partition and optional sort key)
- ProvisionedThroughput (read/write capacity)
Then call CreateTable API and wait until status is ACTIVE before use.

Full Transcript

Creating a DynamoDB table involves defining the table name, attributes, key schema, and throughput settings. After calling the CreateTable API, the table status is initially CREATING. We must wait until the status changes to ACTIVE before the table can be used. AttributeDefinitions specify data types, while KeySchema defines primary keys. ProvisionedThroughput sets read and write capacity units. This process ensures the table is properly configured and ready for operations.