Season 3

Namaste Power BI

Episode 35

Advanced Modeling Patterns

⏱ 50:00

Episode Summary

Complex modeling scenarios — many-to-many relationships, bridge tables, role-playing dimensions, slowly changing dimensions (SCD Type 1 & 2), and parent-child hierarchies.

This is Episode 35 of the free Namaste Power BI course on DevWithData — covering advanced modeling patterns. Watch the video above, then pass the MCQ checkpoint to unlock the next episode and update your Data Readiness Index score.

Key Takeaways

→Many-to-many requires a bridge table (e.g., Student-Course enrollment)
→Role-playing dimensions: one Date table used for multiple date columns
→SCD Type 1 overwrites; Type 2 adds new rows with effective dates
→PATH/PATHITEM functions flatten parent-child hierarchies for RLS

⚠ Common Interview Pitfalls

•Using bidirectional filtering instead of a proper bridge table
•Not creating separate Date table instances for role-playing (use TREATAS instead)
•Building SCD Type 2 without proper surrogate keys

Official Reference

Deepen your understanding with official Microsoft documentation.

PL-300 Official Training Course

Microsoft's official instructor-led training for the Power BI Data Analyst certification.

https://learn.microsoft.com/en-us/training/courses/pl-300t00

Power BI Documentation

Complete reference for Power BI Desktop, Power BI Service, and Power BI Embedded.

https://learn.microsoft.com/en-us/power-bi/

Content on DevWithData is original and inspired by official Microsoft resources. The links above point directly to Microsoft Learn — always the authoritative source.

← Ep 34: Object Level Security

Ep 36: Incremental Refresh →

Episode Checkpoint

Sign in to attempt the quiz and unlock the next episode.