Tech Skills
Data Analytics & Business Intelligence
Excel, SQL, Power BI, Tableau — turn raw data into business decisions
Skills in this topic
7 skills — Sign in to track your progress
Data Literacy
beginner
Write SELECT queries with JOIN and GROUP BY
Excel & Spreadsheets
beginner
Build a dynamic dashboard with pivot tables and slicers
SQL Analytics
intermediate
Write window functions (ROW_NUMBER, LAG, LEAD)
BI Tools
intermediate
Build an interactive dashboard from a SQL source
Python for Data
intermediate
Clean and transform a messy dataset with pandas
Data Storytelling
intermediate
Build a stakeholder dashboard with a narrative structure
ML for Analytics
advanced
Build a churn prediction model
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Python for Data Science — Mini Project: Visual Storytelling with Data
Throughout this section, we’ve learned how to create and interpret different types of visualizations: Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Python for Data Science — Mini Project: Visual Storytelling with Data
Throughout this section, we’ve learned how to create and interpret different types of visualizations: Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
My Oasis Infobyte Data Analytics Internship Experience
During my internship as a Data Analytics Intern at Oasis Infobyte (OIBSIP), I gained valuable hands-on experience by working on real-world… Continue reading on
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
FIRST_VALUE and LAST_VALUE in SQL — One Works Like Magic, the Other Lies to Your Face
Let me tell you something that took me an embarrassingly long time to figure out. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
My Data Science & AI/ML Internship Preparation Notes — Part 5
Data Visualization with Matplotlib and Seaborn Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
My Data Science & AI/ML Internship Preparation Notes — Part 5
Data Visualization with Matplotlib and Seaborn Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Polars: Tried for the speed, stayed for the API
Beyond the 100x speed hype: Why the real power of Polars lies in how it changes the way you write data pipelines. Continue reading on Data And Beyond »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Polars: Tried for the speed, stayed for the API
Beyond the 100x speed hype: Why the real power of Polars lies in how it changes the way you write data pipelines. Continue reading on Data And Beyond »
Dev.to · Kenichi Uchiumi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Your analytics dashboard is blind to most AI traffic. Here's how I fixed mine.
A few weeks ago I went digging through raw server logs on a WordPress site I run, out of simple...
Dev.to · Lucas Braun
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
SQL window functions: what separates a mid-level from a senior developer
Most developers know SELECT, JOIN, and GROUP BY. Window functions are where the gap between mid and...
Dev.to · Datta Sable
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Microsoft Fabric Certification Roadmap 2026: A Practical Guide to DP-600, DP-700 & DP-800
If you're planning to work with Microsoft Fabric in 2026, one of the first questions you'll face...
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
7 Developer Skills That Became More Valuable Than Coding
What clients and companies actually notice Continue reading on Python in Plain English »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
What Building for Europe Taught Us About Modern Data Infrastructure
When people talk about modern data platforms, the conversation usually revolves around performance, scalability, and AI readiness. Continue reading on Medium »
Dev.to · Hanzala Mehmood
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data Analyst CV Keywords: The 2026 ATS Guide
TL;DR Data analyst screening is unusually technical: the ATS matches specific languages...
Dev.to · Krunal Kanojiya
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Batch vs Real-Time Streaming: When to Use Each (with Examples)
Every data pipeline makes one foundational decision before a single line of code is written. Does it...
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Python vs SQL: Which Should You Learn First?
If you’re planning to start a career in data analytics, you’ve probably come across this question: Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Power BI vs Python for data visualisation — which one should you actually use?
I use both professionally. They are not competing tools — they solve different problems. Here is the honest breakdown nobody gives you. Continue reading on Medi
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Handling Multi-Grain Fact Tables Incorrectly in Power BI: Causes, Consequences, and Proven Modeling…
One of the fastest ways to create inaccurate reports in Power BI is to combine fact tables that exist at different levels of detail… Continue reading on Power B
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data with a Pulse: Why Healthcare Analytics is the Ultimate Intersection of Math & Social Impact
Every day, hospitals around the world have to generate petabytes of data from electronic health records (EHR) to patient check-in times… Continue reading on Med
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data cleaning is notoriously known as the most time-consuming phase of any data science workflow…
To solve this problem, I built and published PuraLang Engine—an open-source, AI-driven Domain-Specific Language (DSL) framework that… Continue reading on Medium
Dev.to · Allen Yang
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Manage Excel Worksheets in Python: Create, Copy, Delete, and Rename
Worksheets are the fundamental units for organizing and separating data in Excel files. A single...
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
# The Market’s Enigma: How to Read Order Flow Before the Move Happens
In the winter of 1941, the codebreakers at Bletchley Park were not trying to read German messages directly. They were looking for patterns… Continue reading on
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Building a Cloud-Ready ETL Pipeline with Python: From Raw Data to Analytics-Ready Insights
In the modern data-driven landscape, organizations generate vast amounts of information from disparate sources. Before this data can be… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Debugging a Distributed Job Stuck in CANCELING in Apache SeaTunnel
Recently, I worked on an issue in Apache SeaTunnel where a job could sometimes stay in the CANCELING state forever after a user requested… Continue reading on M
Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Day 39: How ClickHouse® Powers Real-Time Analytics
Real-time analytics has become a core requirement for modern applications. Product teams expect...
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Surviving the Coursework Crunch: Time Management for Data Science Students
Every Data Science Students program eventually hits the same wall. Somewhere around midterms, a problem set in statistical inference lands… Continue reading on
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Titanium Dioxide Prices Index Analysis with Quarterly Trend and Forecast Prices Chart
<img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazon
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data Science Course: Build Future-Ready Skills for a Successful Career
Data Science Course: Build Future-Ready Skills for a Successful Career Continue reading on Medium »
Dev.to · Nick
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Part 15: Workflow Patterns and Recipes - Data Transformation
As we conclude this 15-part series on Vyshyvanka, we want to leave you with practical tools. One of...
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Month‑End Offer: Data Science & Analytics Courses — Janakpuri
Boost your career with Delhi’s…
Special month‑end discount available — enroll before the offer ends! Institute of Data Science and Analytics, Janakpuri — trusted… Continue reading on Mediu
Dev.to · switchpdf
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Convert a JSON API Response to Excel: 3 Ways (No-Code, Python, Power Query)
You call an API, get back JSON, and someone non-technical asks for it "in Excel." Here are three ways...
Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
ClickHouse 26.6 latest update
ClickHouse 26.6 Deep Dive: Streaming Queries, MPP Execution, Geospatial Analytics, and...
Dev.to · Kendi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Why Statistics Is the Backbone of Data Science
One of the biggest surprises I had while learning data science was realizing that Python isn't the...
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Tiny White Grain That Runs The World (And No — It’s Not Cocaine)
Finance wants to call it the new oil, but this is the oldest power source on Earth Continue reading on The Quantastic Journal »
ArXiv cs.AI
📊 Data Analytics & Business Intelligence
📄 Paper
⚡ AI Lesson
1w ago
Computational Analysis of Heart Rate Variability in Healthy Adults
arXiv:2606.26816v1 Announce Type: new Abstract: Heart Rate Variability (HRV) analysis is a key indicator of cardiac physiological state and aids in disease diag
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
How top 7 ccTLD zones are covered by AllZonefiles.io in June 2026
Jun 26, 2026 · 1 min read Continue reading on Medium »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
I’m a Data Analyst. Here’s the Plan I Made When I Realized My Job Was Changing.
The 5 things worth building that automation can’t replace — and how you can start this week. Continue reading on Data Science Collective »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
I’m a Data Analyst. Here’s the Plan I Made When I Realized My Job Was Changing.
The 5 things worth building that automation can’t replace — and how you can start this week. Continue reading on Data Science Collective »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
SQL Text Sorting With Collations
Text sorting can feel small until two databases give different answers for the same text. Reports can place uppercase names ahead of… Continue reading on Medium
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
When Your Chart Lies to You: The Truth Behind Histograms and KDE
What every beginner data analyst needs to understand before trusting any distribution plot. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
When Your Chart Lies to You: The Truth Behind Histograms and KDE
What every beginner data analyst needs to understand before trusting any distribution plot. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Why CDP Fails Without Executive Alignment? ( Audio version included)
In today’s data-driven business landscape, many companies invest in a CDP (Customer Data Platform) expecting better customer insights… Continue reading on Mediu
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
How an Altered Gaming Habit Could Save a Life
How Live-Service Telemetry Can Solve the Modern Isolation Epidemic Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Your Pandas Code Is Slow: 20 Optimization Techniques for Processing Millions of Rows Faster
Most Pandas bottlenecks aren’t caused by large datasets — they’re caused by a handful of expensive coding patterns. Continue reading on Data Science Collective
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Your Pandas Code Is Slow: 20 Optimization Techniques for Processing Millions of Rows Faster
Most Pandas bottlenecks aren’t caused by large datasets — they’re caused by a handful of expensive coding patterns. Continue reading on Data Science Collective
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Your Pandas Code Is Slow: 20 Optimization Techniques for Processing Millions of Rows Faster
Most Pandas bottlenecks aren’t caused by large datasets — they’re caused by a handful of expensive coding patterns. Continue reading on Data Science Collective
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Math That Runs Every Database
Every SQL query you’ve ever written is secretly a chain of mathematical operations. Here’s the system hiding underneath it. Continue reading on Science Spectrum
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
This Project Made Me More Serious About Building Things People Can Trust
The longer I worked on it, the less I cared about impressiveness and the more I cared about whether the system felt worth relying on. Continue reading on Medium
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