Towards Data Science is a community-powered publication that showcases work in data science, machine learning and artificial intelligence. Every day newcomers, seasoned researchers and industry practitioners publish tutorials, research notes and real-world case studies that help the field move forward.

Towards Data Science

A comprehensive walkthrough of building a star schema financial model in Power BI, covering data profiling and transformation in Power Query, creating dimension tables using Reference instead of Duplicate, building a dynamic date table with M code, establishing proper relationships, and implementing DAX measures for variance analysis including YoY and MoM calculations. Emphasizes the importance of proper data modeling foundations before writing DAX, with practical insights on cardinality analysis, hiding unnecessary fields, and time intelligence patterns.

Beyond the Flat Table: Building an Enterprise-Grade Financial Model in Power BI

The Mission: The Enterprise-Grade Financial Suite

Phase 1: Data Transformation (Power Query)

Phase 2: Data Modeling (From Tables to a Star Schema)

Phase 3: DAX Measures & Variance Analysis (Where the Model Starts to Shine)