The Walmart Sales Network Graph visualizes employee collaboration across three departments—Electronics, Grocery, and Apparel—using a force-directed node-link diagram. Color-coded circles represent individual employees, with department membership shown by node fill, and grey links indicate collaborative ties between them. Built with D3 v5, the layout uses `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to position nodes, while drag interactions are enabled via `d3.drag`. The SVG rendering includes smooth tick-updated positions for both links and nodes, here applied to static sample data embedded in the script.