计算机应用 ›› 2005, Vol. 25 ›› Issue (02): 279-282.DOI: 10.3724/SP.J.2005.0279

• 数据库与数据挖掘 • 上一篇    下一篇

一种实时数据库查询执行方法的设计

刘云生,彭楚冀,廖国琼   

  1. 华中科技大学计算机科学与技术学院
  • 发布日期:2005-02-01 出版日期:2005-02-01
  • 基金资助:

     “十.五”国防预研(413150403);;国防预研基金项目(00J15. 3. 3.JW0529)

Design of a query execution method for real-time database

LIU Yun-sheng, PENG Chu-ji, LIAO Guo-qiong   

  1. School of Computer Science and Technology, Huazhong University of Science & Technology
  • Online:2005-02-01 Published:2005-02-01

摘要:

在深入分析实时数据库常用的查询执行方法———指针法缺点基础上,给出了一种新的实时数据库查询执行方法———D/S方法。该方法结合了指针法、实体化方法和流水线方法的优点,可有效地节省查询执行的内存需求,并扩展了实时数据库查询优化的空间。

关键词: 实时数据库, 查询执行, 实体化, 流水线

Abstract:

In this paper,we analysed the weakness of the general query execution method, point method in real-time database,and then presented a flexible one,the D/S method which contains the virtues of materialization method, stream processing method and point method.Using the new method,the demand of memory decline effectively,and the space of query optimization will be enlarged.

Key words: real-time database, query execution, materialization method, stream processing method

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