# Document history
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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/strategy-database-disaster-recovery/strategy-database-disaster-recovery.rss).

| Change | Description | Date | 
| --- |--- |--- |
| [Updated details in the comparison table](#doc-history) | In the [Choosing the right database for your RTO and RPO requirements](https://docs.aws.amazon.com/prescriptive-guidance/latest/strategy-database-disaster-recovery/choosing-database.html) section, updated the information about Amazon RDS for Db2, and corrected RPO details for Amazon RDS for Oracle and Amazon RDS for Oracle (alternative). | June 11, 2025 | 
| [Added Amazon RDS for Db2](#doc-history) | In the [Choosing the right database for your RTO and RPO requirements](https://docs.aws.amazon.com/prescriptive-guidance/latest/strategy-database-disaster-recovery/choosing-database.html) section, added information about Amazon RDS for Db2. | March 4, 2024 | 
| [Updated RTO/RPO details](#doc-history) | In the [Choosing the right database for your RTO and RPO requirements](https://docs.aws.amazon.com/prescriptive-guidance/latest/strategy-database-disaster-recovery/choosing-database.html) section, updated the information about Amazon DocumentDB, Amazon ElastiCache (Redis OSS), and Amazon RDS for SQL Server. | April 19, 2023 | 
| [Initial publication](#doc-history) | — | October 26, 2022 |