When installing ARD Hub, want to know what DB's are supported?
Release : 3.x
Component : CA Agile Requirements Designer
Per the documentation at https://techdocs.broadcom.com/content/broadcom/techdocs/us/en/ca-enterprise-software/devops/agile-requirements-designer/3-0/installing/install-ard-hub/install-ard-hub-using-docker/install-ard-hub-manually.html refers only MySQL5.6 or 5.7; or Microsoft SQL Server 2008 or later is supported. In SQL Server, it will support Standard, Enterprise or Express editions. SQL Express, usually not used for Production environments but can be used for Test/DEV.
Don't need a dedicated server, it can be a Shared SQL Server and it doesn't have to be installed on the same server. The ARD Hub server needs access to the database.