Business Intelligence Specialist Interview Questions and Answers

It depends on the specific requirements of the project and the nature of the data being used.

• Consider the size and complexity of the data - live connection may be more suitable for real-time data updates

• Importing data can be more efficient for large datasets or when offline access is needed

• Evaluate the security and privacy implications of each option

• Test both methods to determine which one performs better for your specific use case

SUMX is a DAX function in Power BI used to iterate over a table and calculate the sum of an expression for each row.

• Used to perform calculations on a table by iterating over each row

• Commonly used in creating calculated columns or measures in Power BI

• Helps in calculating cumulative totals, averages, or other complex calculations

• Example: SUMX(Sales, Sales[Quantity]*Sales[Unit Price]) calculates the total sales amount by multiplying quantity and unit price for each row in the Sa...read more