The System Snapshot
This is a schema view of a scientific publication domain. In the database, there are three tables, paper table, author table, and topic paper. For example, the paper entity has the following attributes: author, filename, year, conference, citations, topic, number of papers it cited and the number of papers that it has been cited. For the topic of a paper, there is a foreign key from the paper entity to the topic entity. User can push the right-lowest button to change to the data view from the schema view.
This is the data view for part of the data. The square, triangle and circles represent .... respectively. In this picture, the brightness shows the number of papers an author has published. The brighter the color, the more paper an author has published. The hue indicates the year the paper was published. Saturation represents the number of citations.