# Document history
<a name="doc-history"></a>

The following table describes significant changes to this guide. If you want to be notified about future updates, you can subscribe to an [RSS feed](https://docs.aws.amazon.com/prescriptive-guidance/latest/dynamodb-data-modeling/dynamodb-data-modeling.rss).

| Change | Description | Date | 
| --- |--- |--- |
| [Added a *Best practices* section and an example for hierarchical data modeling.](#doc-history) | We added a summary of [DynamoDB best practices](https://docs.aws.amazon.com/prescriptive-guidance/latest/dynamodb-data-modeling/best-practices.html) and a step-by-step example of designing and validating a [hierarchical model](https://docs.aws.amazon.com/prescriptive-guidance/latest/dynamodb-data-modeling/hierarchical-data-modeling.html). | December 5, 2023 | 
| [Initial publication](#doc-history) | — | October 26, 2020 |