This example demonstrates the general update pattern in D3 with several special cases, using a row of fruit in a bowl that changes over time. It shows how to handle entering elements (adding fruit), exiting elements (removing them), and updating existing ones (changing an apple to a lemon). The code uses D3 v5 with `selection.enter`, `selection.merge`, and `selection.exit` to bind data to SVG groups, while `scaleOrdinal` maps fruit types to color and size. A `setTimeout` sequence drives the temporal changes.