Database Queries and Quality of Service Management

Résumé

The notion of Quality of Service (QoS) has evolved rapidly over the past few years. Until recently, the term "QoS" referred to certain characteristics of network performances outside the control or influence of the end user. Recent years have seen great advances in QoS research, mainly due to the emergence of multimedia networking and computing. New user perspectives and emergence of QoS demanding, multimedia applications complete these technological developments. The concept of QoS has moved from where the end user had no influence to the delivered quality. Today, ATM networks not only have the capability of transmitting information at high speed, but they have the potential to offer end-to-end QoS-configurable communications under the influence of the end user. The Canadian Institute for Telecommunications Research (CITR), in collaboration with the IBM Toronto Laboratory Center for Advanced Studies (CAS) initiated in 1993 a major project on Broadband Services. The goal of this project is to provide the software technologies required to support the development of distributed multimedia applications. Several issues such as multimedia data management, continuous media file servers, multimedia synchronization and QoS management are addressed in this project. To validate approaches proposed in the different areas, a News-on-demand prototype has been developed. In the framework of our training period at UQAM, we focus on QoS management in the context of the CITR Broadband Services project. Our objectives are to investigate the interactions between database management systems and QoS manager. We aim at proposing a new approach where the database system executes some QoS management functions for the QoS manager. This proposal is implemented in a prototype built using relational database technology.

la date de réponse	1998
langue originale	Anglais
Superviseur	Jean RAMAEKERS (Promoteur)