[Solved] Given the following code snippet using DynamoDB Document Client, what will be the output if the item exists? const params = { TableName: "Users", Key: { userId: "123" } };... | DynamoDB

DynamoDB - with AWS SDK

Given the following code snippet using DynamoDB Document Client, what will be the output if the item exists?

const params = { TableName: "Users", Key: { userId: "123" } };
const command = new GetCommand(params);
const data = await docClient.send(command);
console.log(data.Item);

AAn object representing the user with userId '123', e.g., { userId: '123', name: 'Alice' }

BA string containing the userId '123'

CAn error because GetCommand is not supported by Document Client

DUndefined, because data.Item is not returned

Step-by-Step Solution

Solution:

Step 1: Understand GetCommand with Document Client
GetCommand returns an object with an Item property containing the requested item if it exists.
Step 2: Analyze console.log output
Logging data.Item prints the full object stored for userId '123', not just a string or undefined.
Final Answer:
An object representing the user with userId '123', e.g., { userId: '123', name: 'Alice' } -> Option A
Quick Check:
GetCommand returns item object = B [OK]

Quick Trick: GetCommand returns full item object in data.Item [OK]

Common Mistakes:

MISTAKES

Expecting only the key value as output
Thinking GetCommand is unsupported
Assuming data.Item is undefined

Master "with AWS SDK" in DynamoDB

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More DynamoDB Quizzes

Given the following code snippet using DynamoDB Document Client, what will be the output if the item exists?

Step 1: Understand GetCommand with Document Client

Step 2: Analyze console.log output

Final Answer:

Quick Check:

Want More Practice?