Author name: Gulab Chand Tejwani

business-intelligence, ChatGPT, data-analysis, data-science, power-bi

We Gave ChatGPT Our Raw Sales Data and Asked It to Build a Dashboard.

Gulab Chand Tejwani / March 31, 2026

We uploaded 14 months of real client sales data — 127,000 transactions, 8 product categories, 12 regions — to ChatGPT and asked it to…Continue reading on Towards AI »

business-intelligence, data-analysis, data-modeling, data-science, power-bi

The Data Model Mistake That Costs Companies $100K+ Per Year (and 90% of Power BI Developers Make…

Gulab Chand Tejwani / March 24, 2026

I’ve audited 47 Power BI implementations in the last 3 years. 42 of them had the same fundamental data modeling mistake — a mistake that…Continue reading on Towards AI »