Power BI Masterclass - Learning DAX - Dynamic Visualization and Disconnected Tables

The video tutorial covers the use of Power BI for data visualization, focusing on creating and using virtual and disconnected tables. It explains how to set up dynamic visualizations using these tables and the SWITCH function to create dynamic measures. The tutorial provides a step-by-step guide to implementing these concepts, ensuring that users can visualize data dynamically and effectively.

What is the primary purpose of Power BI?

• Data storage

• Data visualization

• Data encryption

• Data deletion

What are virtual tables in Power BI?

• Tables stored in the cloud

• Tables imported from SQL

• Tables created in Excel

• Tables created within a measure

How are disconnected tables different from other tables in Power BI?

• They cannot be used in visualizations

• They are not evaluated based on DAX expressions

• They are always connected to the data model

• They are only used for data import

What is the role of disconnected tables in dynamic visualizations?

• They store static data

• They allow for dynamic evaluation of expressions

• They are only for aesthetic purposes

• They are used for data export

What is the purpose of the SWITCH function in Power BI?

• To switch between different data sources

• To return different results based on an expression

• To change the color of a chart

• To delete unwanted data

What is the default value shown by the dynamic measure if no selection is made?

• All customers

• No customers

• New customers

• Lost customers

How can you visualize both new and lost customers dynamically?

• By using a pie chart

• By using a static chart

• By using a disconnected table and dynamic measure

• By importing data from Excel

What is the benefit of using a slicer in Power BI?

• To change data types

• To export data

• To filter data dynamically

• To delete data

Which function is often used in combination with SWITCH for dynamic measures?

• TRUE

• AVERAGE

• COUNT

• SUM

What does the dynamic measure evaluate in the context of the video?

• The total sales

• The number of new and lost customers

• The average order value

• The customer satisfaction score