Figure 2 reminds me of the Tufte idea of putting a very complex chart on a table or wall and letting people examine it for themselves. BTW, I have no idea what these images represent. The abstract is below - interesting that the authors include cost as one of the factors.
An essential facet of the data deluge is the need for different types of users to apply visualizations to understand how data analyses and queries relate to each other. Unfortunately, visualization too often becomes an end product of scientific analysis, rather than an exploration tool that scientists can use throughout the research life cycle. However, new database technologies, coupled with emerging Web-based technologies, may hold the key to lowering the cost of visualization generation and allow it to become a more integral part of the scientific process.