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“You can click on that bar,” Clara said.

Clara dragged the “Profit Margin” measure onto a . The needle swung to 23%. She added a Slicer for “Region.” Then a Matrix for monthly trends. The screen began to pulse with color. A Map visual bloomed with bubbles over Berlin, Tokyo, and São Paulo. “You can click on that bar,” Clara said

“This is a star schema,” Dan said. “It’s not just a diagram. It’s the truth. A good model is a good story.” She added a Slicer for “Region

Clara didn’t want to make it sing. She wanted to set it on fire. “This is a star schema,” Dan said

Clara spent an hour dragging lines between her tables. She felt like an architect. She created a separate “Calendar” table using a DAX formula Dan provided: Calendar = CALENDAR(MIN(Sales[Date]), MAX(Sales[Date])) . She didn’t fully understand DAX yet, but the date slicer that appeared later made her gasp.

He did. A tooltip appeared: Top Customer: NordAsia GmbH. Decline reason: Logistics handover delay.