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Charles

Hi, I’m Charles Ndungu. I recently started learning data science, analytics, and AI, coming from an operations background. I’m exploring Git, Python, data engineering, and analytics tools.

Joined on Jan 14, 2026

Cover image for Connecting PostgreSQL to Power BI for Data Analysis

Charles

Apr 14

Connecting PostgreSQL to Power BI for Data Analysis

#database #datascience #postgres #powerbi

7 min read

Cover image for Machine Learning Basics: What is ML? Supervised vs Unsupervised, Features vs Labels

Charles

Apr 13

Machine Learning Basics: What is ML? Supervised vs Unsupervised, Features vs Labels

#machinelearning #datascience #tutorial #beginners

4 min read

Cover image for Mastering SQL Joins and Window Functions: A Practical Guide with an E‑commerce Dataset

Charles

Mar 7

Mastering SQL Joins and Window Functions: A Practical Guide with an E‑commerce Dataset

#sql #database #softwaredevelopment #datascience

20 min read

Cover image for From Raw Data to Real Action: The Analyst's Journey as a Data Translator in Power BI

Charles

Feb 8

From Raw Data to Real Action: The Analyst's Journey as a Data Translator in Power BI

#dashboard #datamodeling #dax #powerbi

7 min read

Cover image for The Backbone of Power BI: A Deep Dive into Data Modeling & Schemas

Charles

Jan 31

The Backbone of Power BI: A Deep Dive into Data Modeling & Schemas

#powerbi #datamodeling #starschema #dataanalytics

8 min read

Cover image for MS Excel for Data Analytics — A friendly, practical guide for beginners

Charles

Jan 25

MS Excel for Data Analytics — A friendly, practical guide for beginners

#datascience #beginners #analytics #dataanalytics

11 min read

Cover image for Git for Data Analysts: My First Beginner Guide (Git Bash + GitHub Step-by-Step)

Charles

Jan 17

Git for Data Analysts: My First Beginner Guide (Git Bash + GitHub Step-by-Step)

#datascience #ai #git #tutorial

5 min read

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