Crystal report

Shouldn't be too bad.  I think all you need to do is to set up Caché as an ODBC Data source on the system.  Steps are as follows:

    1) Download Caché ODBC Driver from wrc.intersystems.com or .intersystems.com/pub/cache/odbc/2016

    2) Go to Control Panel->Administrative Tools->Data Sources ODBC -> System DSN and create a new DSN with the InterSystems ODBC Driver.  You will need to know the IP, Port, Namespace, and credentials for your Caché server.

    3) Configure Crystal Reports to use that DSN.

    4) ????

    5) Profit!