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Deductive database architecture for geographic data

  • US 6,601,073 B1
  • Filed: 03/22/2000
  • Issued: 07/29/2003
  • Est. Priority Date: 03/22/2000
  • Status: Expired due to Term
First Claim
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1. A database architecture for a navigation system comprising:

  • a geographic database including geographic data and a plurality of indexes into the geographic data;

    data access programming that accepts requests for geographically-referenced data, accesses the geographic data from a medium upon which the geographic data are stored and provides responses to the requests for geographically-referenced data;

    logic rules associated with the geographic database, wherein each of said logic rules comprises a first part specifying a condition and a second part specifying an action; and

    a deductive database engine associated with the data access programming, wherein said deductive database engine accesses and combines said logic rules to determine which of said indexes to use to determine which geographic data to access from the medium.

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