Pushing quality of service inside database systemsAssociate Professor Brigitte Kerherve Tuesday 29 October at 11am AbstractAmong the essential functionalities supported by distributed multimedia systems, quality of service (QoS) is of prime interest and requires the involvement of the different system components such as database systems, file servers or client machines. This function aims to control and guarantee the quality level the system is able to offer to the user. While integrating such a function in a distributed multimedia system, it is necessary to consider the user's requirements regarding the quality of service provided by the system. Such requirements may concern system performance, the quality of the information, as well as the costs of the service provision. Implementing this function leads to design methods for managing the needed resources and for delegating some tasks to specific system components such as file servers or database systems. In this talk we investigate interactions between database systems and QoS managers in distributed multimedia systems. We first introduce QoS management as an essential end-to-end functionality that the entire system should provide. We then propose an approach to integrate user-defined requirements, together with the dynamic properties of the system components involved, into a distributed query processing environment. Furthermore, we point out some current work on integration, federation and inter-operation of QoS information for database systems. Short resumeBrigitte Kerherv is an Associate Professor in the Department of Computer Science, Universit du Qubec Montral, Canada, she joined in 1992. Her research interests include quality of service (QoS) management, metadata for multimedia databases as well as advanced database systems to support distributed multimedia applications. She is currently involved in research projects funded by the Canadian Institute for Telecommunication Research (CITR), the Network for Computing and Mathematical Modeling (NCM2) and the Natural Science and Engineering Research Council (NSERC). Brigitte was the workshops chair for the 9th ACM Multimedia Conference (ACM-MM2001). She is a past co-chair for the International Workshop on Multimedia Information Retrieval (MIR 2000) and the International Workshop on Multimedia Intelligent Storage and Retrieval Management (MISRM 1999). She acted as a co-chair of the 1st Workshop on Canadian Database Research, organised at UQAM in 1999 (CanDB). She is, or has been, involved in several conferences and workshops including ACM Multimedia, ACM SIGMOD, MIS, IWQOS, IDEAS, CARI, DEXA/QPMIDS, CASCON. Brigitte received her Ph.D. in computer science in 1986 from the University of Paris VI, France. From 1982 to 1987, she participated in the Sabre project at Institut National de Recherche en Automatique et Automatique (INRIA, France), on the design and implementation of a complete database system. From 1987 to 1989, she has been involved in european research projects in the field of advanced database systems. From 1989 to 1992, she was an assistant professor at the Ecole Nationale Suprieure des Tlcommunications (Telecom Paris, France). Brigittie is currently visiting the Multimedia Delivery Technologies Group at CSIRO/CMIS. |