01-03-2025, 11:37 AM
Power BI developers use tools like Power Query for data preparation, enabling them to connect, clean, and transform datasets. Techniques include data filtering, merging multiple sources, and applying calculated columns. Power BI developer use Power Query’s M language for advanced transformations and automate repetitive tasks with applied steps. Data validation and profiling tools help identify errors, missing values, and inconsistencies. Proper preparation techniques ensure data is accurate, reliable, and optimized for analysis. This phase sets the foundation for effective modeling and visualization, making it essential for delivering meaningful business insights.