For large datasets, incremental refresh loads only new or changed rows, reducing load times. Define range start and end parameters in Power Query.
Effective BI relies on a star schema:
Why it matters: A poor model leads to incorrect aggregations and slow DAX measures. Power BI’s relationship management is a hidden strength—use “Manage Relationships” to enforce referential integrity. For large datasets, incremental refresh loads only new
The course must cover the lifecycle.