Managing adaptive presentation executions in distributed multimedia database systems

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 specified by the user and other reasons. A concrete concept to realize performance-based reactive playout management in distributed multimedia database systems is proposed. This covers the identification of respective components in distributed database system architectures along with corresponding algorithms.