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Articles 177,811Blog Posts 163,975Tech Tutorials 47,447Research Papers 34,914News 22,307
⚡ AI Lessons
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
7h ago
Big Data: Instalasi Apache Spark & Pengenalan PySpark DataFrame
praktikum Big Data ke-4 Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
How to Break Down Market Stress with Options Data in Python
Build a live SPY stress framework Continue reading on DataDrivenInvestor »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Window Functions in PySpark: A Practical Guide with ROW_NUMBER, RANK, LAG, LEAD, and Running Totals
Non member readers can read it here for free Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
SQL vs. NoSQL: The Only Framework You Need to Choose the Right Database
A no-fluff, in-depth guide to ACID, sharding, consistency, and the real-world tradeoffs behind every database decision. Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
How to Insert and Manage Shapes in Excel Using Python
In Excel, shapes are often used for process indicators, callouts, dashboard decoration, or turning scattered data into a clear diagram… Continue reading on Medi
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Stop Staring at Dashboards: Building Automated Action Loops with Microsoft Fabric Data Activator
A dashboard can tell us that our inventory is falling. A brilliantly designed dashboard can even tell us that our inventory has fallen… Continue reading on Towa
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Building a Fixed-Income Intelligence System: What Changed at BondStats This Week
Most financial platforms do not suffer from a lack of information. They suffer from too much of it. Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Mastering SQL Subqueries & CTEs: Writing Smarter Queries Like a Real Data Analyst
Most people begin learning SQL by focusing on simple queries. They learn: Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
CSV Files Aren’t Broken: They’re Just Misunderstood
Discover why CSV files appear broken and learn how delimiters, encoding, commas, line breaks, and formatting can cause common CSV errors. Continue reading on Me
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
SQL is Dead (And NoSQL Still Lost): The New World Order of Data
It’s 2012. You’re sitting in the back row of a crowded tech meetup, eating lukewarm pizza. A developer on stage is passionately explaining… Continue reading on
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
My Friend Lost a 60 LPA Amazon Data Engineer Offer — Here’s What the Interview Covered
A friend recently interviewed for a Data Engineer position at Amazon with a compensation package of around 60 LPA. Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3w ago
Getting into Data Engineering is actually pretty easy
Background · 5 core skills · business context Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3w ago
What is data science?
Data science combines math and statistics, specialized programming, advanced analytics, ai and machine learning with specific subject… Continue reading on Data
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Metadata: The Silent Architect
Figure 1 — Image edited with Grok Imagine, showing metadata as medicine. Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Azure Data Factory — Job Seeker Tips | Top 25 Questions from real scenarios to interview-winning…
⚙️ ADF & IR pipelines & triggers interview craft Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Journey of a SQL Query
From Declaration to Parsing, Optimization, Planning & Execution Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Why Your “Advanced” Power BI Dashboard Is Actually Hurting Your Career
Your Power BI dashboard has 27 visuals, 14 slicers, 38 measures, and a dark-mode theme. So why does nobody use it? Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
How to Clean Large CSV Files in Seconds Without Blowing Up Your RAM
Why loading gigabytes of data into Pandas just to fix headers or sanitize null values is overkill — and how a lightweight streaming… Continue reading on Medium
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Building a Polished Table with Python’s great_tables
If you’ve ever tried to quickly make a table in Python look presentable, you know how difficult it can be. great_tables is a great helper… Continue reading on M
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Complete Guide to SQL Window Functions
If you’ve ever written a subquery just to calculate a running total, or self-joined a table to compare each row to the one before it… Continue reading on Medium
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Spark Architecture: Understanding Driver, Executors, Jobs, Stages, and Tasks
Apache Spark looks simple from the outside: write a few DataFrame operations and run your pipeline. Under the hood, however, Spark builds… Continue reading on M
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
10 Data Visualization Techniques Data Analyst Should Master Based on Core Visualization Principles
Core visualization techniques for communicating patterns, comparisons, trends, and insights clearly to stakeholders Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
9 SQL Habits That Separate People Who Trust Their Data From People Who Get Surprised By It
SQL has a strange reputation. Everyone learns just enough of it to get by, a SELECT, a JOIN, a WHERE clause, and then stops, treating it… Continue reading on Me
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Deloitte SQL Interview Questions for Data Analyst (2026)
SQL has become one of the most important skills for Data Analysts, Business Analysts, Data Engineers, and Analytics Engineers. While basic… Continue reading on
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