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Storage server for processing video transactions through sequential access in multimedia DBMS

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2 Author(s)
Keun Hyung Kim ; Dept. of Comput. Sci., Sogang Univ., Seoul, South Korea ; Seog Park

When multimedia DBMS services video data, the storage system for it needs a large disk bandwidth in order to provide more users simultaneously with the real time retrieval requests. So, the storage system of a multimedia DBMS generally has the structure of a disk array which consists of multiple disks. When the storage system serves multiple video stream requests, its bottlenecks come from the seeking delay caused by the random movement of the disk head and from unfair disk access due to disk load unbalance among multiple disks. This paper presents a novel placement and retrieval policy for the storage system of a multimedia DBMS. The new policy retrieves the requested data through sequential access and maintaining disk load balance so that it can diminish the bottleneck on retrieval and can provide the real time retrieval services for more users simultaneously. Moreover, the novel retrieval policy introduces the concept of dummy request so that it can simply control the timing for retrieving data

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Database Applications in Non-Traditional Environments, 1999. (DANTE '99) Proceedings. 1999 International Symposium on

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