Linking 2 databases in Epicor Prophet 21 for reporting and reference

I am trying to review data based on a cross reference between 2 databases.

As such I ideally need to link the 2 databases into a portal, ReportStudio, or InfoMaker so that the end user can look up item or customer references without having to merge the 2 databases. Otherwise, a DBA would need to be involved.

For more clarity we have a staging database along with Dev, Test, Model, and Prod. I want to link staging db with the other 4. We then could look for old products that may not be in (nor need to be) in the current instances.

Maybe setup the staging database as an External Datasource?

Thank you for the quick reply. I should have clarified I am using Epicor’s Prophet 21.