DynamoDB Primary Keys

Question 1

Primary Key

Answer 1

When you create a table, you have to define a Primary Key.

The primary key determines where and how your data will be stored in partitions.
The primary key cannot be changed later.

Question 2

Partition Key

Answer 2

Determines which partition data should be written to.

Question 3

Sort Key

Answer 3

Determines how data should be sorted on a partition.

Using a Partition Key and Sort Key is called a Composite Primary Key.
Using only a Partition Key is called a Simple Primary Key.

Question 4

Important Notes

Answer 4

DynamoDB doesn’t have a Date datatype; for dates, you have to use a string.