Business Intelligence with Microsoft Power BI - with Material - Appending Multiple Files from a Folder

The video tutorial demonstrates how to append multiple Excel files from a folder into Power BI. It covers the process of importing files, transforming data, and using custom columns to extract and expand data. The tutorial also explains how to refresh data in Power BI to include new files added to the folder, ensuring that charts and visuals are automatically updated.

What is the main purpose of appending multiple Excel files in Power BI?

• To export data to another format

• To delete unnecessary files

• To create a single comprehensive report

• To modify the original data

Which option should you select in Power BI to import a folder of Excel files?

• Excel file

• Database

• Folder

• Text file

What is the purpose of the Excel.Workbook function in Power BI?

• To extract data from Excel files

• To compress data

• To delete data

• To rename columns

What should you do if unwanted prefixes are added to column names in Power BI?

• Ignore them

• Delete the last step and expand the column again

• Manually rename each column

• Export the data and re-import it

How can you ensure that new files added to the folder are included in Power BI?

• Manually add each file

• Click the refresh button in Power BI

• Re-import the entire folder

• Restart Power BI

What is the significance of changing data types in Power BI?

• It exports data to another format

• It compresses the data

• It deletes unnecessary data

• It helps in data visualization and analysis

What happens when you click on 'close and apply' in Power BI?

• Data is compressed

• Data is exported

• Data is deleted

• Data is saved and applied to Power View