DataWarehousing.us is an independent information site researched, written and maintained by Mustafa Bilgic, a sole trader based in Adıyaman, Türkiye. There is no company behind it, no sales team and no lead selling: pages exist to explain one topic clearly and to give you a free tool that runs entirely in your browser.
How this site is written
Every page starts from primary sources and plainly labels what is arithmetic, what is common practice and what varies too much to put a number on. Where a figure depends on your situation, the page says so and the tool asks you for your own numbers instead of inventing averages.
What this site is not
DataWarehousing.us does not sell anything, does not take commissions from providers named on any page, and does not collect or store what you type into its tools. Advertising, where present, is clearly separated from content.
Questions or corrections: contact.