How to get data from third party sql database
There are different ways to integrate between ERP and DCS system. It depends how your infrastucture looks like and what your IT/OIT policy looks like and how you can set this up.
I know that ABB have integration package with SAP for example but you may need som extra software to get that in place. There are plenty of software solutions out there that can help you here, also from ABB.
In the end, it depends how your infrastructure looks like...