VBM Portfolio Projects: SQL Data Cleaning (e-commerce data)
Course Overview
What You'll Learn
- Read the brief properly so you know what “correct” means
- Explore the raw schema and spot the mess early (mixed date formats, typos in categories, missing values, duplicates)
- Build a typed, safer silver layer where errors surface in a controlled way
- Enforce the business rules and deduplicate into one trusted clean_table
- Compute and standardise all KPI outputs into a consistent results table
- Validate results, understand tolerances/rounding, and debug mismatches like a professional
- Finish by turning the whole pipeline into a portfolio-ready GitHub project, with a clean repo structure, a strong README, and proof of results
About This Free Course
This course is built to give you a publishable portfolio project as the end product — a complete SQL data-cleaning and KPI pipeline you can put on GitHub, link on LinkedIn, and confidently talk through in interviews.
It’s a real-world simulation built around one messy dataset and a business brief with a clear target: deliver ten KPIs that are trustworthy enough to go on a dashboard.
Most SQL “data cleaning” courses either stay at the level of syntax drills, or they use clean toy datasets where nothing breaks. That’s not what you face in real data teams.
In this course you’ll work through the same workflow you’d use on a real project:
Read the brief properly so you know what “correct” means
Explore the raw schema and spot the mess early (mixed date formats, typos in categories, missing values, duplicates)
Build a typed, safer silver layer where errors surface in a controlled way
Enforce the business rules and deduplicate into one trusted clean_table
Compute and standardise all KPI outputs into a consistent results table
Validate results, understand tolerances/rounding, and debug mismatches like a professional
Finish by turning the whole pipeline into a portfolio-ready GitHub project, with a clean repo structure, a strong README, and proof of results
Course outline (high level):
Section 00: Course Introduction
Section 01: The Verulam Blue Mint Environment
Section 02: free financial services understanding interest rates course the Challenge Brief
Section 03: Exploring Source Data Schema
Section 04: Data Cleaning I – Sampling & Completeness
Section 05: Data Cleaning II – Silver Layer & Normalisation
Section 06: Data Cleaning III – Business Rules & Deduplication
Section 07: Understanding the KPIs
Section 08: Computing KPIs
Section 09: Results
Section 10: Portfolio project deployment (repo + README + LinkedIn-style project story)
By the end, you won’t just know “how to clean data using SQL”. You’ll have an end-to-end portfolio project you can explain clearly: what was wrong with the data, what you changed, what rules you enforced, and why your KPIs can be trusted.
Who Should Take This Course
"VBM Portfolio Projects: SQL Data Cleaning (e-commerce data)" is aimed at people who want a practical, structured introduction to development without paying full price for it. It's a solid fit if you're starting out in development and want a guided course rather than piecing tutorials together yourself, if you've tried free YouTube content on the topic and want something more organized in around 5.5, or if you already work in a related area and want a refresher you can finish at your own pace. Since enrollment happens on Udemy itself, you keep full access to view the lectures, download any provided resources, and revisit the material later — this isn't a stripped-down or time-limited version of the course.
Why This Course Is Worth Taking
Our take: this listing earns a spot on FreeWebCart because the coupon we verified actually brings the price to $0, not just a token discount, and the course carries a 0/5 rating on Udemy from 0+ students who've already enrolled. That combination — real reviews plus a working 100% OFF code — is what we look for before publishing a development course. It won't replace hands-on experience or a full degree program, but as a low-risk way to test whether development is worth pursuing further, or to pick up one specific skill, the free price tag makes it an easy yes while the coupon lasts.
Pros & Cons
👍 Pros
- 100% free to enroll via this coupon (normally $19.99)
- Lifetime access on Udemy once enrolled, even after the coupon expires
- Self-paced — no fixed schedule or live sessions to attend
👎 Cons
- Coupon is time-limited and can expire before you enroll
- No live instructor support — questions go through Udemy's Q&A, not us
- Certificate is a Udemy completion certificate, not an accredited qualification
Frequently Asked Questions
Is "VBM Portfolio Projects: SQL Data Cleaning (e-commerce data)" really free?
Yes — we verified a 100% OFF Udemy coupon for this development course before publishing it. Enroll directly on Udemy using the button below; no credit card is needed while the coupon is active.
How long will this coupon last?
Udemy coupons typically last 1–3 days or expire after roughly 1,000 enrollments, whichever comes first. If the price on Udemy no longer shows $0 when you click through, the coupon has expired since we last checked it.
Do I keep access after the coupon expires?
Yes. Once you enroll while the coupon is live, "VBM Portfolio Projects: SQL Data Cleaning (e-commerce data)" is yours to keep on Udemy — including any future updates the instructor makes — even after the coupon runs out.
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