Type de document: Patent Application

Method And System For Data Compression In A Relational Database

A method for applying adaptive data compression in a relational database system using a filter cascade having at least one compression filter stage in the filter cascade. The method comprises applying a data filter associated with the compression filter stage to the data input to produce reconstruction information and filtered data, then compressing the reconstruction information to be included in a filter stream. The filtered data is provided as a compression filter stage output. The method may comprise evaluating whether the compression filter stage provides improved compression compared to the data input. The filter stage output may be used as the input of a subsequent compression filter stage.


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  • Publication: 20 mars 2008
  • Demande: 22 août 2007
    US US 84301907 A
  • Priorité: 22 août 2007
    US US 84301907 A
  • Priorité: 18 sept. 2006
    US US 84516706 P

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