Need help with star data model fact table at KNIME Analytics Platform

Hi dear community,

I have to do a case study about BI-System implementation. Unfortunately I haven’t done those things before and no knowledge about the technical things, only theoretical based on the study.

What I did already.

Imported transaction and dimensions table CSVs by CSV Reader node. Connected the transaction and dimensions separately to joiner nodes. The Joiner nodes are connected to GroupBy nodes to get each dimension. So far so good. Just two days of recherché 🤮

But know I doesn’t understand how to create the fact table and connect ist to the dimensions. I just don’t get it …hell

I would appreciate your help. (added a screenshot of my building, hope you will see it)

Br.