Abstract
Multimedia database systems (MMDBSs) must be able to handle efficiently time dependent and time independent data, and to support Qualityof-Service. Based on the requirements of the DEDICATION project, i.e., building a MMDBS for asynchronous distance education, we have designed the data model TOOMM (Temporal Object-Oriented MultiMedia data Model). TOOMM is a novel data model that integrates temporal concepts into an object-oriented multimedia data model. TOOMM supports three time dimensions: valid time, transaction time, and a new time dimension specifically tailored for multimedia data types called play time. In this paper, we describe the concepts, implementation, and evaluation of TOOMM for the distance education scenario of the University of Oslo.
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