博客來Most Power BI reports don’t fail because of bad visuals.
They fail because the data model underneath them was never designed to scale.
If you’ve ever opened a Power BI file and felt uneasy about touching anything...
If performance mysteriously degrades as reports grow...
If the same metric shows different numbers depending on the visual...
You’re not dealing with a reporting problem. You’re dealing with a modeling problem.
Power BI Data Modeling is written for professionals who want their models to be fast, stable, explainable, and trusted-today and years from now. This is not a collection of shortcuts or isolated tips. It’s a practical guide to thinking like a professional modeler and building semantic models that hold up under real-world pressure.
This book shows you how experienced analysts, BI developers, and architects design models that reduce rework, prevent fragile dependencies, and make performance issues the exception rather than the norm. You’ll learn how to move from raw, messy source data to production-ready models that support multiple reports, users, and business questions without constant redesign.
Instead of chasing fixes after problems appear, you’ll learn how to make the right decisions early-so those problems never appear in the first place.
What You’ll Discover Inside- How to design semantic models that stay fast and reliable as data volumes grow
- Why star schemas outperform normalized designs in real Power BI environments
- How to align business questions with model structure before writing a single measure
- The modeling mistakes that quietly destroy performance and trust
- How to design relationships, filtering, and granularity without creating ambiguity
- When to use Import, DirectQuery, Composite Models, and Datamarts with confidence
- How to write DAX that respects filter context and model behavior
- Techniques for diagnosing and fixing poorly designed models without breaking reports
- How to future-proof your Power BI architecture for reuse, governance, and scale
Throughout the book, concepts are explained clearly and practically, using real scenarios drawn from professional projects. You’ll see how small modeling decisions affect performance, maintainability, and user confidence-and how to avoid the traps that turn simple models into long-term liabilities.
By the end, you won’t just build Power BI models that work.
You’ll build models you can stand behind.
If you’re ready to stop patching fragile reports and start designing Power BI solutions that feel solid, predictable, and professional, this book will change how you model data-permanently.
