| 实时数据仓库中支持QoS的更新和查询任务调度 |
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| 引用本文： | 师金钢,鲍玉斌,冷芳玲,于戈,王大玲.实时数据仓库中支持QoS的更新和查询任务调度[J].小型微型计算机系统,2011,32(5). |
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| 作者姓名： | 师金钢 鲍玉斌 冷芳玲 于戈 王大玲 |
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| 作者单位： | 东北大学,信息科学与工程学院,辽宁,沈阳,110819 |
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| 基金项目： | 国家自然科学基金项目(60773222)资助 |
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| 摘 要： | 实时数据仓库中,数据更新不再是定期批量执行,而是持续不间断地进行.因此更新与查询的执行调度成为了重要问题.提出一种支持服务质量(QoS)的更新和查询调度算法,定义了查询相关的QoS参数,包括期望的查询响应时间和可接受的实时数据延迟;根据查询任务的具体QoS要求,进行更新和查询的实时调度.实验证明该算法能够根据查询的具体QoS需求,合理地调整任务的执行顺序,为用户提供更快速的查询响应和更高的数据实时性.
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| 关 键 词： | 实时数据仓库 服务质量 实时调度 数据新鲜度 |
QoS-based Updates and Queries Scheduling in Real-time Data Warehouse |
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| SHI Jin-gang,BAO Yu-bin,LENG Fang-ling,YU Ge,WANG Da-ling.QoS-based Updates and Queries Scheduling in Real-time Data Warehouse[J].Mini-micro Systems,2011,32(5). |
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| Authors: | SHI Jin-gang BAO Yu-bin LENG Fang-ling YU Ge WANG Da-ling |
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| Affiliation: | SHI Jin-gang,BAO Yu-bin,LENG Fang-ling,YU Ge,WANG Da-ling(Information Science and Engineering Institute of Northeastern University,Shenyang 110819,China) |
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| Abstract: | In real-time data warehouses,data update is no longer implemented in the batched and periodic way during the idle time of data warehouses,but continuously ongoing.Thus the scheduling of updates and queries becomes a key issue.This paper proposes a QoS-based updates and queries scheduling algorithm.First,the paper defines some QoS parameters related to user queries,including the expected query response time and the acceptable real-time data delay.Then,according to the specific QoS requirements of the queries... |
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| Keywords: | real-time data warehouse QoS real-time scheduling data freshness |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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