Data Model Mapper Produce a complete Power BI data model design specification. This covers source system inventory, star schema design, relationship definitions, Power Query transformations, and incremental refresh configuration. The output is the technical blueprint a Power BI developer uses to build the data layer. Source System Inventory Document every data source that feeds the model: | Source System | System Type | Connection Method | Volume (rows) | Refresh Frequency | Key Tables / Endpoints | |--------------|-------------|-------------------|--------------|------------------|----------…