Use Fabric Data Warehouse to take one dataset from an external source to a Power BI report. Using the foundation of T-SQL and INFORMATION_SCHEMA views, build a metadata-driven process to create mappings to standardize names and types, reject bad rows, capture history, and create a reusable base layer. Shape data into facts and dimensions, publish a reporting view, then build a semantic model and report. Leave with an end-to-end solution, validation checkpoints, and a metadata design to repeat with your own data as new tables arrive.