------------------------------------------------------------------------------- B O S T O N U N I V E R S I T Y Computer Science Department C O L L O Q U I U M Friday April 1, 1994 11:00am (Coffee served at 10:30am) Seminar Room / MCS 135 ------------------------------------------------------------------------------- Liberating Visual Queries from Rigid Constraints Isabel F. Cruz Brown University Advanced applications such as multimedia and digital libraries demand rich data models and powerful query languages. The well-known benefits of visualization suggest the use of visual query languages for such applications. Previous research has focused on pre-defined visual representations of data and queries, which are suitable for specific applications, but difficult to extend and generalize. We propose DOODLE, an object-oriented meta-language for defining visual query languages by example. DOODLE supports constraints to specify a variety of complex displays, such as graphs, bar charts, and temporal diagrams, using a small set of primitives. Our approach builds on the theory of query languages for object-oriented databases and provides a new conceptual framework for visual languages. Host: Prof. Steve Homer ------------------------------------------------------------------------------- For more information contact Prof. Azer Bestavros -------------------------------------------------------------------------------