UpdateItem basics in DynamoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the table name for the UpdateItem operation.

DynamoDB

response = client.update_item(TableName='[1]', Key=key, UpdateExpression=update_expr)

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

AItem

BUpdateExpression

CUsers

DKey

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Key' or 'Item' instead of the table name.

Confusing UpdateExpression with TableName.

The TableName parameter specifies which table to update. Here, 'Users' is the correct table name.

2fill in blank

medium

Complete the code to specify the key attribute name for the item to update.

DynamoDB

key = {'UserId': {'S': [1]

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AUserId

B'123'

C'UpdateExpression'

D'Item'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the attribute name instead of its value.

Omitting quotes around the string value.

The key value must be a string representing the primary key of the item. Here, '123' is the user ID.

3fill in blank

hard

Fix the error in the UpdateExpression syntax to set the 'Age' attribute.

DynamoDB

update_expr = 'SET Age = [1]'

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A:newAge

B#Age

CnewAge

DAge

Attempts:

3 left

💡 Hint

Common Mistakes

Using the attribute name directly instead of a placeholder.

Omitting the colon before the placeholder.

In DynamoDB UpdateExpression, attribute values must be placeholders starting with a colon, like ':newAge'.

4fill in blank

hard

Fill both blanks to define ExpressionAttributeValues for setting Age to 30.

DynamoDB

expr_attr_values = { [1]: {'N': [2] }

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A{':newAge'}

B'30'

C':newAge'

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Using curly braces incorrectly around keys.

Using number 30 without quotes.

ExpressionAttributeValues keys must be strings with colon prefix, and values must be strings representing numbers.

5fill in blank

hard

Fill all three blanks to complete the UpdateItem call with table name, key, and update expression.

DynamoDB

response = client.update_item(TableName=[1], Key=[2], UpdateExpression=[3])

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

A'Users'

B{'UserId': {'S': '123'}}

C'SET Age = :newAge'

D'Age'

Attempts:

3 left

💡 Hint

Common Mistakes

Missing quotes around TableName or UpdateExpression.

Incorrect Key dictionary format.

The TableName is 'Users', the Key is a dictionary with UserId, and the UpdateExpression sets Age using a placeholder.