Incremental refresh in Power BI - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Incremental Refresh in Power BI?

Incremental Refresh is a feature that loads only new or changed data instead of refreshing the entire dataset. It saves time and resources by updating data in parts.

beginner

Why use Incremental Refresh instead of full refresh?

Incremental Refresh reduces refresh time and resource use by updating only recent data. This is helpful for large datasets where full refresh is slow or costly.

intermediate

What are the two key parameters needed for Incremental Refresh?

You need a RangeStart and RangeEnd date/time parameters. These define the data window to refresh incrementally.

intermediate

How does Power BI decide which data to refresh with Incremental Refresh?

Power BI refreshes data between RangeStart and RangeEnd. It keeps older data unchanged and refreshes only recent or changed data within that range.

beginner

What is a common real-life example of using Incremental Refresh?

A sales report that updates daily. Instead of reloading all sales history, only today's and recent days' sales data are refreshed.

What does Incremental Refresh primarily help with?

A Loading only new or changed data

B Deleting old data automatically

C Creating new reports automatically

D Changing data source connections

Incremental Refresh loads only new or changed data to save time and resources.

Which parameters are essential for setting up Incremental Refresh?

A RefreshStart and RefreshEnd

B StartDate and EndDate

C RangeStart and RangeEnd

D DateFrom and DateTo

Power BI requires RangeStart and RangeEnd parameters to define the data window for incremental refresh.

Incremental Refresh is most useful when working with:

A Small datasets that change rarely

B Data sources without date fields

C Static reports with no data changes

D Large datasets with frequent updates

Incremental Refresh is best for large datasets that update often to reduce refresh time.

What happens to data outside the RangeStart and RangeEnd during Incremental Refresh?

A It is deleted

B It remains unchanged

C It is refreshed fully

D It is archived automatically

Data outside the RangeStart and RangeEnd remains unchanged during incremental refresh.

Which of these is NOT a benefit of Incremental Refresh?

A Automatic data cleaning

B Lower resource use

C Faster refresh times

D Better handling of large datasets

Incremental Refresh does not clean data automatically; it focuses on efficient data loading.

Explain how Incremental Refresh works in Power BI and why it is useful.

Think about refreshing only recent data instead of the whole dataset.

Describe a real-life scenario where Incremental Refresh would improve report performance.

Imagine a report that updates every day with new data.