📰 Medium · Programming

A no-fluff, in-depth guide to ACID, sharding, consistency, and the real-world tradeoffs behind every database decision. Continue reading on Medium »

In Excel, shapes are often used for process indicators, callouts, dashboard decoration, or turning scattered data into a clear diagram… Continue reading on Medi

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

Most financial platforms do not suffer from a lack of information. They suffer from too much of it. Continue reading on Medium »

Most people begin learning SQL by focusing on simple queries. They learn: Continue reading on Medium »

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

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

A friend recently interviewed for a Data Engineer position at Amazon with a compensation package of around 60 LPA. Continue reading on Medium »

Background · 5 core skills · business context Continue reading on Medium »

Data science combines math and statistics, specialized programming, advanced analytics, ai and machine learning with specific subject… Continue reading on Data

Figure 1 — Image edited with Grok Imagine, showing metadata as medicine. Continue reading on Medium »

⚙️ ADF & IR pipelines & triggers interview craft Continue reading on Medium »

From Declaration to Parsing, Optimization, Planning & Execution Continue reading on Medium »

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 »

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

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

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

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

Core visualization techniques for communicating patterns, comparisons, trends, and insights clearly to stakeholders Continue reading on Medium »

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

SQL has become one of the most important skills for Data Analysts, Business Analysts, Data Engineers, and Analytics Engineers. While basic… Continue reading on

SQL remains one of the most important technical skills for Data Analysts, Business Analysts, Analytics Engineers, and Data Engineers. Continue reading on Medium

Landing a Data Engineer interview at Google is a significant milestone, but clearing the interview process requires much more than… Continue reading on Medium »

Database transactions sometimes need to reserve rows before business logic reads them, checks a condition, and writes a result. Continue reading on Medium »