A database specialist is doing a code review of code implemented by a team developer. A sample of the code is given below:
aws dynamodb create-table \
 --table-name Donations \
 --attribute-definitions \
 AttributeName=Organization,AttributeType=S \
 AttributeName=User,AttributeType=S \
 --key-schema \
 AttributeName=Organization,KeyType=HASH \
 AttributeName=User,KeyType=RANGE \
--provisioned-throughput \
ReadCapacityUnits=10,WriteCapacityUnits=5
Which statement is true about the schema attributes?

Answer options:

A.User attribute is the primary key. Organization attribute is the sort key.
B.User attribute is the partition key. Organization attribute is the sort key.
C.Organization attribute is the primary key. User attribute is the sort key.
D.Organization attribute is the partition key. User attribute is the sort key.

Answer: D
In a DynamoDB table, a composite primary key consists of the partition key and the sort key. The partition key is also called the hash attribute (since an internal hash function determines the physical storage partition where the item will be stored). Sort key is also called the range attribute since items in the same partition are stored locally together in sorted order based on this key value.
In this scenario, Organization attribute is the partition key, and the User attribute is the sort key. Therefore, Option D is CORRECT and other options are incorrect.
Reference:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.CoreComponents.html
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/getting-started-step-1.html