Multimedia databese systems are the database management systems which can manage not only the traditional type of alpha-numeric data but also new type of data such as texts, images, videos, and sounds. The research and development of multimedia databeses were initiated about a decade ago, but the true multimedia databese systems have not been developed yet. In this paper, we investigate the definition of multimedia databeses, the effectiveness of the object-oriented approach to construct multimedia databeses, and the architecture of a multimedia databese management system OMEGA being under development at the author's research group so that the readers can get the entire figure of multimedia databese system technology. Single medium databeses such as text, image, video, and sound databeses are also examined to overview the current status of multimedia component database technologies.
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