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Database retrieval system having a natural language interface

  • US 5,197,005 A
  • Filed: 05/01/1989
  • Issued: 03/23/1993
  • Est. Priority Date: 05/01/1989
  • Status: Expired due to Fees
First Claim
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1. A database retrieval system having a natural language interface, said system comprising:

  • a computer processor;

    a natural language interface coupled to said computer processor;

    first means operatively associated with said computer processor for producing a database-independent, canonical, internal meaning representation of a natural language query entered into said natural language interface;

    second means operatively associated with said computer processor for identifying database elements that are necessary to satisfy the query represented by said internal meaning representation;

    third means operatively associated with said computer processor for generating a database query among database elements identified by said second means, said database query enabling the retrieval and aggregation of data from a database to satisfy said natural language query; and

    debugging means for deriving an external meaning representation from said internal meaning representation, wherein said external meaning representation is provided in a form that can be easily understood by a database developer;

    said external meaning representation enabling a database developer to comprehend the internal meaning representation and verify that a natural language query entered into the natural language interface is properly interpreted to enable the correct retrieval and aggregation of data from said database.

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