I am working on a project to help the user manually import their data sources in the format of CSV or JSON, then the data will be imported into the data warehouse, after that these data sources will be automate generate to RDF Data cubes with R2RML for analytic purposes.
The problem is, I couldn't find a way to write a common R2RML structure for all the the table without declaring the exact names of existed tables and columns.
I very appreciate if someone could help me about that.