BO Polestar - Source
What is source for BO Polestar , I meas to say there is only Universe is source for BO Polestar ,
can't do with Web Intelligence Report ?
Hi you can build universe on top of your XLS , CSV files. Since you can add more than one universes in your Polestar workspace I do not see a problem there.
If you want to merge the data from your CSV and XLS files with your DB/DWH data in one universe then you should consider using the Data Federator product. You can build a universe on top of the DF source, which merges your data data, and use this as one of the sources for your polestar workspace.