Scheduled data refresh in Power BI - Dashboard Guide

Dashboard Mode - Scheduled data refresh

Business Question

How can we keep our sales dashboard data up-to-date automatically every day without manual updates?

Sample Data

Date	Region	Product	Sales Amount
2024-06-01	North	Widget A	100
2024-06-01	South	Widget B	150
2024-06-02	North	Widget A	200
2024-06-02	East	Widget C	300
2024-06-03	West	Widget B	250
2024-06-03	South	Widget A	180

Dashboard Components

• KPI Card: Total Sales
  Formula: Total Sales = SUM('Sales'[Sales Amount])
  Result: 1180
• Line Chart: Sales Over Time
  X-axis: Date
  Y-axis: Total Sales (SUM of Sales Amount)
  Shows sales trend by date
• Bar Chart: Sales by Region
  X-axis: Region
  Y-axis: Total Sales (SUM of Sales Amount)
  Shows sales distribution by region
• Table: Sales Details
  Columns: Date, Region, Product, Sales Amount
  Shows raw sales data rows
• Scheduled Refresh Setup: Data refresh set to daily at 2 AM to update data automatically

Dashboard Layout

+----------------------+----------------------+
|      Total Sales      |    Sales Over Time   |
|       (KPI Card)      |      (Line Chart)    |
+----------------------+----------------------+
|     Sales by Region   |    Sales Details     |
|      (Bar Chart)      |       (Table)        |
+----------------------+----------------------+
|          Scheduled Data Refresh Info          |
+-----------------------------------------------+
    

Interactivity

Filters for Date and Region allow users to select specific periods or regions. When a filter is applied:

• Total Sales updates to show sum for selected data.
• Sales Over Time line chart redraws to show filtered dates.
• Sales by Region bar chart updates to reflect selected regions.
• Sales Details table shows only rows matching filters.

The scheduled refresh ensures that the data behind all visuals is refreshed daily without manual intervention.

Self Check

If you add a filter for Region = 'North', which components update and what changes occur?

• Total Sales updates to sum sales only from the North region (100 + 200 = 300).
• Sales Over Time line chart shows sales trend only for North region dates.
• Sales by Region bar chart highlights North region sales and hides others.
• Sales Details table filters to show only rows where Region is North.

Key Result

A sales dashboard that updates daily with scheduled data refresh, showing total sales, sales trends, and regional sales breakdown.

Practice

1. What is the main purpose of scheduled data refresh in Power BI?

easy

A. To create new reports from scratch

B. To manually refresh data only when the user clicks refresh

C. To automatically update reports with the latest data at set times

D. To delete old data from the dataset

Solution

1. Step 1: Understand scheduled refresh concept

   Scheduled data refresh means Power BI updates data automatically without manual action.

2. Step 2: Identify the purpose in Power BI context

   This automatic update keeps reports current by refreshing data at set times.

3. Final Answer:

   To automatically update reports with the latest data at set times -> Option C

4. Quick Check:

   Scheduled refresh = automatic update [OK]

Hint: Scheduled refresh means automatic updates, not manual [OK]

Common Mistakes:

• Confusing scheduled refresh with manual refresh
• Thinking it creates new reports
• Assuming it deletes data

2. Which of the following is the correct place to set the scheduled refresh frequency in Power BI?

easy

A. In Power BI Service under Dataset settings

B. In Power BI Desktop under File > Options

C. In the data source system outside Power BI

D. In the Power BI mobile app settings

Solution

1. Step 1: Identify where refresh settings are configured

   Scheduled refresh frequency is set in Power BI Service, not Desktop or mobile app.

2. Step 2: Locate the exact setting

   It is found under Dataset settings in Power BI Service where you configure refresh times.

3. Final Answer:

   In Power BI Service under Dataset settings -> Option A

4. Quick Check:

   Refresh frequency set in Service Dataset settings [OK]

Hint: Set refresh schedule in Power BI Service, not Desktop [OK]

Common Mistakes:

• Trying to set refresh in Power BI Desktop
• Looking in mobile app settings
• Assuming data source controls refresh schedule

3. Consider this scenario: You set a scheduled refresh for your dataset at 2 AM daily. The data source requires a gateway. What will happen if the gateway is offline at 2 AM?

medium

A. The refresh will succeed using cached data

B. The refresh will run but only partially update data

C. Power BI will automatically switch to a backup gateway

D. The refresh will fail and the dataset will not update

Solution

1. Step 1: Understand gateway role in scheduled refresh

   Gateway connects Power BI Service to on-premises data sources for refresh.

2. Step 2: Analyze effect of gateway being offline

   If gateway is offline, Power BI cannot access data source, so refresh fails and no update occurs.

3. Final Answer:

   The refresh will fail and the dataset will not update -> Option D

4. Quick Check:

   Offline gateway causes refresh failure [OK]

Hint: Gateway offline means refresh fails, no update [OK]

Common Mistakes:

• Assuming refresh uses cached data when gateway is offline
• Thinking Power BI auto-switches gateways
• Believing partial data updates happen

4. You configured scheduled refresh but it never runs. Which of the following is the most likely cause?

medium

A. The dataset credentials are invalid or expired

B. The report visuals are not published

C. The Power BI Desktop file is open on your computer

D. The refresh frequency is set to every 5 minutes

Solution

1. Step 1: Check prerequisites for scheduled refresh

   Valid credentials are required for Power BI Service to access data source during refresh.

2. Step 2: Identify why refresh might not run

   If credentials are invalid or expired, refresh cannot authenticate and will not run.

3. Final Answer:

   The dataset credentials are invalid or expired -> Option A

4. Quick Check:

   Invalid credentials block refresh [OK]

Hint: Always verify dataset credentials for refresh to work [OK]

Common Mistakes:

• Thinking open Desktop file blocks refresh
• Assuming report visuals affect refresh
• Believing refresh frequency too fast causes failure

5. You want to schedule a data refresh for a dataset connected to multiple data sources, some on-premises and some cloud-based. What is the best approach to ensure all data refreshes successfully?

hard

A. Only schedule refresh for cloud sources and refresh on-premises data manually

B. Use a gateway for on-premises sources and configure credentials for cloud sources in Power BI Service

C. Install multiple gateways, one for each data source type, and schedule refresh separately

D. Combine all data sources into one cloud source to avoid using gateways

Solution

1. Step 1: Understand gateway use for on-premises data

   On-premises data requires a gateway to connect Power BI Service to local data sources.

2. Step 2: Configure cloud data sources separately

   Cloud data sources do not need a gateway but require proper credentials set in Power BI Service.

3. Step 3: Combine both configurations for full refresh

   Using a gateway for on-premises and credentials for cloud sources ensures all data refreshes automatically.

4. Final Answer:

   Use a gateway for on-premises sources and configure credentials for cloud sources in Power BI Service -> Option B

5. Quick Check:

   Gateway + credentials = full scheduled refresh [OK]

Hint: Gateway for on-premises, credentials for cloud sources [OK]

Common Mistakes:

• Ignoring gateway for on-premises data
• Trying to refresh all sources manually
• Assuming one gateway covers cloud sources