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Filtered index apparatus and method

  • US 5,873,079 A
  • Filed: 11/15/1996
  • Issued: 02/16/1999
  • Est. Priority Date: 09/20/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus comprising a digital computer having a processor operably connected to a memory device storing modules executable on the processor and data structures containing data associated with the modules, the modules and data structures comprising:

  • a database comprising arbitrarily structured records stored in the memory device;

    a filtered index definition containing a criterion for selecting records to be indexed;

    a filtered index, created according to the filtered index definitin, comprising keys corresponding to selected records and stored in the memory device; and

    a database engine module stored in the memory device to be executable by the processor for creating and maintaining the filtered index using the filtered index definition.

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