This example demonstrates an interactive social network graph built with D3.js v7, rendered as SVG. It models a network of university friends and professors, where a central "University" node connects to individual people (e.g., Deepika, Mohan, Rahul) and academic majors (e.g., Chemical, Civil, Computer). The visualization uses a force-directed simulation to position nodes, with red for the central hub and blue for peripheral nodes, and includes drag-and-drop interactivity for node manipulation. Buttons for adding or removing major nodes are also present, though not fully functional in the current implementation.