This example demonstrates the general update pattern with special cases: apples and lemons in a bowl are added, removed, or replaced over time, with D3 transitions handling enter, update, and exit selections. It uses d3.select and data joins to bind fruit objects to SVG groups, with scaleOrdinal for color and radius mapping. The code shows explicit handling of entering elements, merging updates, and removing exits, while also reusing existing circle and text elements within each group. The animation runs on a fixed timeline without user interaction.