Partition key selection in DynamoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

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

DynamoDB

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

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

AEmail

BTimestamp

CSortKey

DUserId

Attempts:

3 left

💡 Hint

Common Mistakes

Using the sort key attribute name as the partition key.

Choosing an attribute that is not unique.

The partition key attribute name is typically a unique identifier like UserId.

2fill in blank

medium

Complete the code to specify the attribute type for the partition key in DynamoDB.

DynamoDB

AttributeDefinitions=[{"AttributeName": "UserId", "AttributeType": "[1]"}]

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

AN

BB

CS

DBOOL

Attempts:

3 left

💡 Hint

Common Mistakes

Using BOOL as an attribute type for partition key.

Confusing number (N) with string (S).

The partition key attribute type is usually a string, represented by S in DynamoDB.

3fill in blank

hard

Fix the error in the partition key definition by completing the missing part.

DynamoDB

KeySchema=[{"AttributeName": "UserId", "KeyType": "[1]"}]

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

ARANGE

BHASH

CPRIMARY

DSORT

Attempts:

3 left

💡 Hint

Common Mistakes

Using RANGE instead of HASH for partition key.

Using invalid key types like PRIMARY or SORT.

The partition key must have the key type HASH in DynamoDB.

4fill in blank

hard

Fill both blanks to define a composite key with partition and sort keys.

DynamoDB

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

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

AUserId

BTimestamp

COrderDate

DEmail

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping partition and sort key names.

Using non-unique attributes as partition key.

The partition key is UserId and the sort key is Timestamp to order items.

5fill in blank

hard

Fill all three blanks to define attribute definitions for a composite key.

DynamoDB

AttributeDefinitions=[{"AttributeName": "[1]", "AttributeType": "S"}, {"AttributeName": "[2]", "AttributeType": "[3]"}]

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

AUserId

BTimestamp

CN

DS

Attempts:

3 left

💡 Hint

Common Mistakes

Using string type for Timestamp when it should be number.

Mixing attribute names and types incorrectly.

UserId is a string (S) and Timestamp is a number (N) attribute type.