×

End user query facility including a query connectivity driver

  • US 5,749,079 A
  • Filed: 01/26/1995
  • Issued: 05/05/1998
  • Est. Priority Date: 03/04/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. An end user query facility for accessing a database having a plurality of database files formed using a database model, comprising:

  • a knowledge base which stores a set of linkages of the database model, each said linkage representing a relation between two of said database files in which a first file has a key that references an equivalent key of a second file;

    a semantics extractor for reading said database model and extracting the semantics of said database model, and which stores in said knowledge base said set of linkages;

    an application, which supports end-user query, to obtain from a user a designation of the information to be extracted from said database;

    a query facility connectivity driver for connecting said application to said query facility, and for connecting said query facility to said database through a database connectivity driver;

    an inference engine which, based upon said designation of information to be extracted from said database, identifies one or more of said database files which contain the desired information and searches said knowledge base to determine the linkage(s) connecting said one or more identified files; and

    a program generator which accesses the linkages obtained by said inference engine and generates a program to extract said desired information from said database.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×