Master Data Modeling in Power BI: Essential Tips & Best Prac...
Istiak Ahmed Khan
Data modeling in Microsoft Power BI is the foundation of accurate and high-performance dashboards.
1. Use Star Schema
Fact table → numeric data (Sales, Revenue)
Dimension tables → descriptive data (Customer, Product, Date)
Keep fact in center, dimensions around it
2. Relationships (When to Use What)
One-to-Many (1:*) → Best practice (Dimension → Fact)
Many-to-One (*:1) → Same as above, reversed view
One-to-One (1:1) → Rare, use only if necessary
Many-to-Many (:) → Avoid; use bridge table instead
3. Filter Direction
Single direction → Recommended (Dimension → Fact)
Bi-directional → Use only for complex cases
4. Data Preparation
Clean data in Power Query
Remove duplicates, fix types, handle nulls
5. DAX Measures
Use measures (SUM, CALCULATE) over columns
6. Best Practices
Use a proper Date table
Keep dimension values unique
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Posted Mar 29, 2026
Data modeling in Microsoft Power BI is the foundation of accurate and high-performance dashboards. 1. Use Star Schema Fact table → numeric data (Sales, Reven...
