Method and system for data compression in a relational database

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 reconstruct...

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Bibliographische Detailangaben
Hauptverfasser: EASTWOOD VICTORIA K, APANOWICZ CAS KAZIMIERZ, WROBLEWSKI JAKUB Z, SYNAK PIOTR D, WOJNARSKI MARCIN, SLEZAK DOMINIK A, WOJNA ARKADIUSZ G
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung: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.