Database Backup (DBS) allows you to query data from multiple backup sets at a time. The backup sets involved must be generated based on the same backup schedule. This topic describes how to query data from multiple backup sets at a time.
Prerequisites
Multiple backup sets are generated based on a database that runs the MySQL, SQL Server,
Oracle, PostgreSQL, Postgres Plus Advanced Server (PPAS), or PolarDB-X engine. The
backup method must be logical backup.
Note The database can be a self-managed database, an ApsaraDB RDS database, or a PolarDB
database, but cannot be a PolarDB O Edition database.
Create a data lake
Query data in the data lake
Manage data in a data lake
- After you create a data lake for a backup schedule, you can add backup sets to the data lake.
- You can create only one data lake for each backup schedule. To create a data lake for a backup schedule for which a data lake is already created, you must delete the existing data lake.