RTMC Pro is designed to only use SQL databases that were created by LNDB (LoggerNet Database Software). Part of what LNDB does is to create some metadata tables. There are also some strict requirements about how the primary keys on the data tables are created. An advanced database administrator can look at what LNDB does to create the database and mimic that (if the data are coming from non-data-logger/LoggerNet sources) to get RTMC Pro to work. However, Campbell Scientific does not recommend doing this and will not provide support for that scenario.