This paper proposes a "visual query interface," which supports users to search and manipulate data in databases without knowing about their data structure. As basic functions of the visual query interface, data visualization, image zooming, and dynamic filtering are proposed. The data visualization helps users understand data more easily from various viewpoints. The image zooming allows users to understand visualized data in various resolutions. And the dynamic filtering supports users' trial and-error in searching data, and its user interface is integrated with the visualization.
Data queries, data visualization. user interface, database, filtering
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