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Author Tu, Yi-Cheng ♦ Prabhakar, Sunil ♦ Elmagarmid, Ahmed ♦ Sion, Radu
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Alternative Plan ♦ Quasaq Prototype Show ♦ Conventional Query Execution ♦ Qos Support ♦ Detailed Low-level Qos Parameter ♦ Important Issue ♦ Quality Requirement ♦ Qos-enhanced Query ♦ End-to-end Qos Control ♦ Multimedia Database ♦ Recent Research ♦ User Level ♦ Proposed Solution ♦ Qos-aware Query Processor ♦ Proposed Architecture ♦ Qualitative Attribute ♦ Prototype Implementation ♦ Little Attention ♦ Resource Utilization ♦ Medium Delivery ♦ Novel Cost Model ♦ Enabling End-to-end Qos ♦ Current System Contention Level ♦ Key Research Issue ♦ System Implementation Detail ♦ System Throughput ♦ Qos-aware Database ♦ Qos-aware Multimedia Database System
Description In Proceedings of EDBT
The paper discusses the design and prototype implementation of a QoS-aware multimedia database system. Recent research in multimedia databases has devoted little attention to the aspect of the integration of QoS support at the user level. Our proposed architecture to enable end-to-end QoS control, the QoS-Aware Query Processor (QuaSAQ), satisfies user specified quality requirements. The users need not be aware of detailed low-level QoS parameters, but rather specifies high-level, qualitative attributes. In addition to an overview of key research issues in the design of QoS-aware databases, this paper presents our proposed solutions, and system implementation details. An important issue relates to the enumeration and evaluation of alternative plans for servicing QoS-enhanced queries. This step follows the conventional query execution which results in the identification of objects of interest to the user. We propose a novel cost model for media delivery that explicitly takes the resource utilization of the plan and the current system contention level into account. Experiments run on the QuaSAQ prototype show significantly improved QoS and system throughput.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2004-01-01