This example demonstrates the general update pattern in D3 with special cases for handling data changes. It shows a bowl of fruit rendered as SVG circles and text labels, where apples and lemons are added, removed, and modified over time. The code uses `selection.enter()`, `selection.merge()`, and `selection.exit()` to manage entering and exiting elements, with `d3.scaleOrdinal` mapping fruit types to colors and radii. A timed sequence updates the data array, triggering re-renders that add, replace, or remove fruit items.