KRAFT: A real-time active DBMS for signal streams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The applications of ubiquitous sensor networks require database system to support the following three functions in addition with conventional database functions. (1) continual event monitoring. Since control systems such as robots perform accurately, event monitoring must be executed in strict real-time. (2) signal processing. To recognize events in the physical world, sensor data must be processed by non traditional way such as similar sequence retrievals. (3) fast signal stream persisting. All of sensor data should be stored to consider the reason of illegal events after accidents or offline data mining. To support the requirements, we propose a new database system KRAFT. To realize (1), KRAFT controls user-level threads on FreeBSD KSE scheduler. To realize (2), KRAFT provides similar sequence retrieval operators. The operators' distance functions are Euclidean and dynamic time warping. To realize (3), KRAFT provides direct persisting, which does not execute the write ahead logging process. We describe preliminary results of experiments and show the performance of KRAFT.

Original languageEnglish
Title of host publication4th International Conference on Networked Sensing Systems, INSS
Pages163-166
Number of pages4
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event4th International Conference on Networked Sensing Systems, INSS - Braunschweig, Germany
Duration: 2007 Jun 62007 Jun 8

Publication series

Name4th International Conference on Networked Sensing Systems, INSS

Other

Other4th International Conference on Networked Sensing Systems, INSS
CountryGermany
CityBraunschweig
Period07/6/607/6/8

Keywords

  • Data stream
  • Fast data insertion
  • Signal processing

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering

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  • Cite this

    Kawashima, H. (2007). KRAFT: A real-time active DBMS for signal streams. In 4th International Conference on Networked Sensing Systems, INSS (pp. 163-166). [4297414] (4th International Conference on Networked Sensing Systems, INSS). https://doi.org/10.1109/INSS.2007.4297414