AWS SDK for JavaScript/Node.js in DynamoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the DynamoDB client from AWS SDK.

DynamoDB

const { DynamoDBClient } = require('[1]');

Drag options to blanks, or click blank then click option'

A@aws-sdk/client-dynamodb

Baws-sdk

Caws-sdk-client

Daws-sdk-v3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'aws-sdk' which is v2 and not modular.

Using incorrect package names like 'aws-sdk-client'.

The AWS SDK for JavaScript v3 modular packages require importing DynamoDBClient from '@aws-sdk/client-dynamodb'.

2fill in blank

medium

Complete the code to create a new DynamoDB client with region 'us-east-1'.

DynamoDB

const client = new DynamoDBClient({ region: '[1]' });

Drag options to blanks, or click blank then click option'

Aus-west-2

Beu-central-1

Cus-east-1

Dap-southeast-1

Attempts:

3 left

💡 Hint

Common Mistakes

Using a region that does not match the intended deployment.

Leaving the region undefined.

The region 'us-east-1' is specified as the AWS region for the DynamoDB client.

3fill in blank

hard

Fix the error in the code to put an item into DynamoDB using the client.

DynamoDB

const params = { TableName: 'Users', Item: { id: { S: '123' }, name: { S: 'Alice' } } };
await client.[1](new PutItemCommand(params));

Drag options to blanks, or click blank then click option'

Aput

Bsend

CputItemCommand

DputItem

Attempts:

3 left

💡 Hint

Common Mistakes

Calling 'putItem' directly on the client.

Using incorrect method names like 'put'.

In AWS SDK v3, you create a PutItemCommand and then call client.send(command). The client does not have a direct 'putItem' method.

4fill in blank

hard

Fill both blanks to import and create a PutItemCommand for DynamoDB.

DynamoDB

const { [1] } = require('@aws-sdk/client-dynamodb');
const command = new [2]({ TableName: 'Users', Item: { id: { S: '001' } } });

Drag options to blanks, or click blank then click option'

APutItemCommand

BDynamoDBClient

CPutCommand

DGetItemCommand

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing PutItemCommand with PutCommand or GetItemCommand.

Importing the client instead of the command.

The PutItemCommand is imported and instantiated to create a command for putting an item in DynamoDB.

5fill in blank

hard

Fill all three blanks to get an item from DynamoDB and extract the attribute 'name'.

DynamoDB

const { [1] } = require('@aws-sdk/client-dynamodb');
const client = new DynamoDBClient({ region: 'us-east-1' });
const command = new [2]({ TableName: 'Users', Key: { id: { S: '123' } } });
const response = await client.[3](command);
const userName = response.Item?.name?.S;

Drag options to blanks, or click blank then click option'

AGetItemCommand

BPutItemCommand

Csend

DgetItem

Attempts:

3 left

💡 Hint

Common Mistakes

Using PutItemCommand instead of GetItemCommand.

Calling 'getItem' method directly on the client.

To get an item, import and instantiate GetItemCommand, then call client.send(command) to execute it.