Zubair Afzal

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Knowledge Base

Data Science Case Studies & Technical Guides

Data Audit Laundry Audit
Jan 29, 2026

How to Audit a Laundry Business Logic

Detecting fraud in service businesses using electricity consumption patterns instead of physical inventory counting.

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Audit Guide Laundry Audit
Jan 29, 2026

The Ultimate Laundry Business Audit Guide

Detecting fraud in service businesses using electricity consumption patterns instead of physical inventory counting.

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Retail Tech Retail Analysis
Dec 15, 2025

Solving the 40% Revenue Gap Mystery

A deep dive into how I used R programming to match inventory logs vs sales data to find the missing gap in Jalal Sons.

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SQL SQL Database
Nov 10, 2025

Why Procurement Needs SQL, Not Excel

Excel crashes at 1 million rows. Learn how SQL handles Big Data for inventory management efficiently.

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Finance Taxation
Jan 20, 2026

Understanding Advance Tax (Section 236H)

A simple guide for procurement officers to calculate WHT and GST correctly in vendor bills.

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