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Method and apparatus for preserving non-current information that can be overwritten in a computer file

  • US 6,055,546 A
  • Filed: 06/30/1999
  • Issued: 04/25/2000
  • Est. Priority Date: 10/31/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for updating a database comprising information from a file comprising at least one section, each section comprising at least one block of information, each block having a first identifier, the file additionally comprising a set of a plurality of second identifiers, each second identifier corresponding to at least one of the first identifiers, the database comprising a set of a plurality of third identifiers, each third identifier corresponding to at least one of the second identifiers from a version of the file, the apparatus comprising:

  • a high record ID compare having a first input operatively coupled to receive at least one of the second identifiers and a second input operatively coupled to receive at least one of the third identifiers, the modifiable block update module for comparing the at least one second identifier received at the modifiable block update first input with the at least one third identifier received at the modifiable block update second input and for signaling at an output responsive to at least one of the at least one second identifiers greater than the at least one third identifiers; and

    a new record creator and copier module having an input coupled to the high record ID compare output for generating and providing at an output at least one row in the database responsive to the signal received at the new record creator input.

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