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Method and system for storing and retrieving compressed data

  • US 4,868,570 A
  • Filed: 01/15/1988
  • Issued: 09/19/1989
  • Est. Priority Date: 01/15/1988
  • Status: Expired due to Term
First Claim
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1. A method of storing and retrieving data comprising the steps of determining from a multiplicity of source data records a group of attributes which represent selected types of characteristics of the source data records and selected types of relationships between elements of source data records, each attribute having an associated predetermined set of rules which define different specific characteristics or relationships of the types represented by that attribute, and each rule of the set being designated by a corresponding attribute value;

  • assigning to each source data record a set of attribute values, one attribute value for each of said attributes, each attribute value designating a particular one of the rules of the associated set of rules which specified a particular characteristic or relationship of the source record;

    assigning to the source data record another set of modifier values for use with the rules designated by the attribute values assigned to such source data record, the modifier values comprising explicit data values which together with such rules express information contained in the source data record;

    forming a compressed data record from the attribute values and the modifier values; and

    storing in a data storage the compressed data record in place of said source data record.

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