Conceptual Modeling and Querying inMultimedia Databases

  • Authors:

  • Chitta Baral;Graciela Gonzalez;Tran Son

  • Affiliations:

  • Department of Computer Science, University of Texas at El Paso, El Paso, Texas 79968, U.S.A. E-mail: chitta@cs.utep.edu;Department of Computer Science, University of Texas at El Paso, El Paso, Texas 79968, U.S.A. E-mail: chelis@cs.utep.edu;Department of Computer Science, University of Texas at El Paso, El Paso, Texas 79968, U.S.A. E-mail: tson@cs.utep.edu

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 1998

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Abstract

In this paper, we discuss some design principles that will aid inthe design and querying of multimedia databases. We use an object-relationaldata model and argue that multimedia objects should normally have a specialattribute called ‘core’ which stores the real object itself incontrast to the abstraction which is reflected in the rest of theattributes. We present an extension to the ER Diagram that takes advantageof the ‘core’ notion to facilitate design of multimediadatabases. We discuss some desirable features in a query language formultimedia databases: simplifications like the use of path expressions andimplicit use of functions (methods) as attributes, and explicitspecification of the display layout and format either at the data definitionlevel or query specification level. To materialize this last feature, wepropose a display specification extension to SQL (SQL+D) thatwe have implemented.