Simple and integrated heuristic algorithms for scheduling tasks with time and resource constraints
Journal of Systems and Software
A quality-of-service specification for multimedia presentations
Multimedia Systems - Special issue on multimedia database systems
Logics for specifying concurrent information systems
Logics for databases and information systems
Analyzing the Multimedia Operating System
IEEE MultiMedia
An Approach to Real-time Scheduling - but is it Really a Problem for Multimedia?
Proceedings of the Third International Workshop on Network and Operating System Support for Digital Audio and Video
Multiquality Data Replication in Multimedia Databases
IEEE Transactions on Knowledge and Data Engineering
Quality-aware replication of multimedia data
DEXA'05 Proceedings of the 16th international conference on Database and Expert Systems Applications
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Quality of Service (QoS) is defined as a set of perceivable attributes expressed in a user-friendly language with parameters that may be subjective or objective. Objective parameters are those related to a particular service and are measurable and verifiable. Subjective parameters are those based on the opinions of the end-users. We believe that quality of service should become an integral part of multimedia database systems and users should be able to query by requiring a quality of service from the system. The specification and enforcement of QoS presents an interesting challenge in multimedia systems development. A deal of effort has been done on QoS specification and control at the system and the network levels, but less work has been done at the application/user level. In this paper, we propose a language, in the style of constraint database languages, for formal specification of QoS constraints. The satisfaction by the system of the user quality requirements can be viewed as a constraint satisfaction problem. We believe this paper represents a first step towards the development of a database framework for quality of service management in video databases. The contribution of this paper lies in providing a logical framework for specifying and enforcing quality of service in video databases. To our knowledge, this work is the first from a database perspective on quality of service management.