BMS Innolabs Software BI Data Warehouse Developer Interview Questions and Answers

Query folding techniques are used to optimize query performance by pushing operations to the data source.

• Query folding allows Power Query to push operations to the data source instead of loading all data into memory.

• It helps reduce the amount of data transferred between the data source and Power Query, improving performance.

• Common query folding techniques include filter folding, join folding, and aggregation folding.

• Fo...read more

Power BI offers interactive visualizations, easy data integration, and seamless collaboration.

• Interactive visualizations make data analysis easier and more intuitive

• Easy data integration allows for combining data from multiple sources

• Seamless collaboration features enable sharing and discussing insights with team members

• Power BI offers a wide range of connectors for various data sources, such as Excel, SQL Server, Sale

DAX is a formula language used in Power BI for data analysis and optimization.

• DAX stands for Data Analysis Expressions

• Used to create calculated columns, measures, and calculated tables

• Optimization techniques include avoiding nested functions and using variables

• Examples: SUM, AVERAGE, CALCULATE functions

I handle teams by fostering open communication, setting clear goals, and providing support.

• Encourage open communication among team members

• Set clear goals and expectations for each team member

• Provide support and resources to help team members succeed

• Lead by example and demonstrate a strong work ethic

• Address conflicts and issues promptly and constructively