https://naos-be.zcu.cz/server/api/core/bitstreams/1fbe6024-1cc6-482e-8872-d86854f2bd3b/content
https://www.kaggle.com/datasets/chadwambles/ecommerce-transactions
https://cw.fel.cvut.cz/old/_media/courses/a5m33izs/datove-sklady.pdf
https://office.lasakovi.com/excel/kontingencni-tabulka/OLAP-kostka-Excel-teorie/
https://homel.vsb.cz/~dan11/is_skripta/IS%202010%20-%20Danel%20-%20Datovy%20sklad.pdf