Season 1

Namaste Power BI

Episode 4

Import vs DirectQuery

⏱ 40:00

Episode Summary

The most critical architectural decision in Power BI — Import mode loads data into memory for speed; DirectQuery queries the source live for freshness. When to use each, and the Composite Model hybrid approach.

This is Episode 4 of the free Namaste Power BI course on DevWithData — covering import vs directquery. Watch the video above, then pass the MCQ checkpoint to unlock the next episode and update your Data Readiness Index score.

Key Takeaways

→Import: fast queries, scheduled refresh, limited by memory
→DirectQuery: live data, slower queries, limited DAX support
→Composite Model combines both — best of both worlds
→Dual storage mode is the secret weapon for aggregation tables

⚠ Common Interview Pitfalls

•Using DirectQuery for everything because "real-time sounds better"
•Not understanding that DirectQuery sends a SQL query on every visual interaction
•Forgetting that Import mode has a 1GB publish limit in shared capacity

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 3: Data Import & Sources

Ep 5: Power Query Basics →

Episode Checkpoint

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