Data / BI portfolio · 3 case studies
From business questions to verifiable findings.
Three case studies with data models, SQL and interactive dashboards for commerce, product and operations.
How do sales change, and which categories generate revenue and gross profit?
Explore dashboardRead case study & SQLRevenue, orders, average order value and gross margin. Month and channel filters update all metrics together. The case compares month length, category contribution and profitability. Apr–Sep 2026 · 1,647 rows.
How do users reach activation and payment, and which cohorts return in week 4?
Explore dashboardRead case study & SQLSeparate acquisition and retention views, a first-7-day funnel, W0–W8 retention and cohort drill-down. Unobserved weeks stay blank. 18 signup cohorts · 3 channels · 486 rows.
Where does capacity fall short, and what changes when demand or capacity grows?
Explore dashboardRead case study & SQLA queue of daily capacity shortfalls, route detail and region filters. A scenario calculator uses explicit daily capacity costs. Jul–Sep 2026 · 364 rows. Sensitivity analysis, not a forecast.
From metrics to action
Consistent KPIs, trends and category contribution.
Channels, funnels, eligible cohorts and useful drill-downs.
Explicit assumptions, recalculation and a fair comparison.
Source data, SQLite, SQL and 24 validation checks.
Demonstration projects with explicit assumptions.