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Abstract A multimedia database management system (MM-DBMS) supports the development of multimedia applications and the handling of multimedia data at runtime. It explicitly handles continuous data such as video, audio and animation. The user of a MM-DBMS gets all the support he needs to store, manipulate, and present such data. Hence application development(More)
The paper describes recent progress in research on database system support for executing multimedia presentations. It proposes the general concept of Reactive Playout Management to adjust multimedia presentations. This adjustment can be required due to performance fluctuations as in the absence of end-to-end quality of service guarantees, cost constraints(More)
A novel database system service called playout management service which performs multimedia presentations was proposed recently. In distributed multimedia database systems without end-to-end guarantees, such a playout management service faces the potential problem that system performance can become insufficient when realizing a stored presentation. This(More)
Database systems which support preorchestrated multimedia presentations must be able to adapt the resource demand of executing presentations. Such adaptations can be dictated by underlying resource management components. When resources are not reserved, such adaptations are necessary to overcome uctuating resource availability. Adaptations across components(More)
* 2 The " Arbeitspapiere der GMD – GMD Technical Reports " primarily comprise preliminary publications, specific partial results and complementary material. In the interest of a subsequent final publication the " Arbeitspapiere/Technical Reports " should not be copied. Critical comments would be appreciated by the authors. No part of this publication may be(More)
2 The " Arbeitspapiere der GMD – GMD Technical Reports " primarily comprise preliminary publications, specific partial results and complementary material. In the interest of a subsequent final publication the " Arbeitspapiere/Technical Reports " should not be copied. Critical comments would be appreciated by the authors. No part of this publication may be(More)
There is an increasing number of multimedia application s that deal with multimedia documents . The creation of such multimedia documents entails several distinctive tasks suc h as writing of text, drawing or scanning of pictures, creatio n of digital animations, digitizing of audios and videos incl . their manipulation (e .g . fading out of an audio) .(More)
In this paper, a teleservice for archiving and retrieving multimedia documents using public networks is described. This teleservice encourages a broad range of commercially applicable multimedia archiving applications suitable for an asynchronous access mechanism. It is based on an integrated architecture comprising stand alone archive clients and a(More)