Use reports database to obtain data automatically in reports (8.3)
When configuring a report definition, the report now automatically queries the default reporting database unless you specify that it queries the standard database or a class-level reporting database. This provides support for reporting against Amazon Aurora read replicas.
You can change which database a report definition obtains data from in the Reporting database field in the Data access tab, as shown in the following image.
For more information, see Report definition data access tab.