DevWithData Blog
Practical guides for Power BI, SQL, and data analytics professionals.
The Power BI Career Roadmap — From Zero to Data Analyst in 2026
Stop learning Power BI in random order. This 26-week roadmap takes you from zero to job-ready by focusing on 5 essential stages: Foundations , Modeling/Core DAX , Advanced Design , Enterprise Service Skills, and Career Launch. Learn to master the Context Engine, write professional DAX, and build a three-project portfolio that proves your Data Readiness. Don't just follow tutorials—follow a sequence that turns you into an elite analyst at devwithdata.in.
10 Common Power BI Mistakes That Make Your Reports Wrong and Slow
These 10 mistakes cost beginners weeks of debugging. Every one is preventable if you know what to watch for — from the mega-table anti-pattern to the CALCULATE trap that produces silently wrong numbers.
Star Schema in Power BI: The Complete Guide to Dimensional Modeling
Every slow report, wrong total, and unpredictable slicer traces back to the data model. Star schema isn't a best practice — it's what Power BI's engine is literally built for. Here's how to implement it correctly.
25 Power BI Interview Questions That Actually Get Asked in 2026
These aren't textbook questions — they're the ones that separate candidates who get hired from those who freeze. Real scenarios, real DAX problems, and the exact reasoning interviewers want to hear.
The Only DAX Functions Cheat Sheet You'll Ever Need (Power BI 2026)
Stop Googling DAX syntax mid-build. This cheat sheet organizes 50+ functions by purpose — the way working analysts actually think. Includes CALCULATE patterns, time intelligence, and the 3 formulas that solve 80% of business problems.