Partition key distribution in DynamoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the partition key attribute name in a DynamoDB table creation.

DynamoDB

KeySchema=[{'AttributeName': [1], 'KeyType': 'HASH'}]

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

A'UserId'

B'SortKey'

C'Timestamp'

D'IndexKey'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the sort key name instead of the partition key.

Confusing 'HASH' with 'RANGE' key types.

The partition key attribute name is specified with 'AttributeName' in the KeySchema. 'UserId' is a common partition key.

2fill in blank

medium

Complete the code to define the attribute type for the partition key in the attribute definitions.

DynamoDB

AttributeDefinitions=[{'AttributeName': 'UserId', 'AttributeType': [1]]

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

A'S'

B'BOOL'

C'B'

D'N'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'BOOL' which is not a valid attribute type for keys.

Confusing 'N' (number) with 'S' (string).

The partition key attribute type must be specified. 'S' stands for String, which is common for partition keys.

3fill in blank

hard

Fix the error in the partition key definition by choosing the correct key type.

DynamoDB

KeySchema=[{'AttributeName': 'UserId', 'KeyType': [1]]

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

A'RANGE'

B'HASH'

C'PRIMARY'

D'PARTITION'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'RANGE' for partition key.

Using invalid key types like 'PRIMARY' or 'PARTITION'.

The partition key must have the key type 'HASH'. 'RANGE' is for sort keys.

4fill in blank

hard

Fill both blanks to create a DynamoDB table with a partition key and a sort key.

DynamoDB

KeySchema=[{'AttributeName': [1], 'KeyType': 'HASH'}, {'AttributeName': [2], 'KeyType': 'RANGE'}]

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

A'UserId'

B'Timestamp'

C'OrderId'

D'Category'

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping partition and sort key names.

Using invalid attribute names for keys.

The partition key is 'UserId' with 'HASH' key type, and the sort key is 'Timestamp' with 'RANGE' key type.

5fill in blank

hard

Fill all three blanks to define attribute definitions for a table with a string partition key and a number sort key.

DynamoDB

AttributeDefinitions=[{'AttributeName': [1], 'AttributeType': [2], {'AttributeName': [3], 'AttributeType': 'N'}]

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

A'UserId'

B'S'

C'Timestamp'

D'OrderId'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing attribute names and types.

Using wrong attribute types for keys.

'UserId' is the partition key with type 'S' (string), and 'Timestamp' is the sort key with type 'N' (number).