In DynamoDB, you can create a unique identifier (ID) for each item in a table using a primary key. A primary key is a unique identifier used to identify each item in a table, consisting of one or two attributes.
There are two types of primary keys in DynamoDB:
- Partition key: A simple primary key composed of one attribute known as the partition key.
- Partition key and sort key: Also known as a composite primary key, composed of two attributes. The first attribute is the partition key, and the second is the sort key.
When you create a table, you need to specify the primary key attributes. The primary key attributes determine the uniqueness of each item in the table and define the items' partition and sort order.
Other Common DynamoDB FAQ (with Answers)
- Is DynamoDB highly available?
- Is connection pooling needed for DynamoDB?
- What language is DynamoDB written in?
- How do you enable cloudtrail for DynamoDB?
- Does DynamoDB support load balancing?
- Can firehose write to DynamoDB?
- Can QuickSight read DynamoDB?
- Can DynamoDB do aggregations?
- Is DynamoDB HIPAA compliant?
- Why is DynamoDB bad?
- What does the DynamoDB query return?
- Is DynamoDB a backend database?
- What are the key differences between DynamoDB and Elasticsearch?
- How to import data from S3 to DynamoDB?
- How do you store JSON on DynamoDB?