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Method and means for lineage tracing of a spatial information processing and database system

  • US 5,193,185 A
  • Filed: 05/15/1989
  • Issued: 03/09/1993
  • Est. Priority Date: 05/15/1989
  • Status: Expired due to Fees
First Claim
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1. A method of tracing lineage of at least one spatial data layer of a spatial information processing and database system comprising the steps of:

  • a user operating a data processing means to establish in a computer having stored software modules capable of establishing and query a meta-database, a meta-database representing all the spatial data layers in said system,said user characterizing all of the spatial data layers in said system using frames, said frames comprising attributes which describe the said data layers,the said computer with software modules creating a semantic network among all layers present in said system,the said user identifying a spatial data layer about which information concerning lineage is desired,the said computer with software modules providing means to query said meta-database and means to supply answers to a received query, the said user posing at least one query concerning the lineage relationship of said identified spatial data layer to other layers of said system, and the said computer with software modules determining the lineage of said identified spatial data layer from the answer to said query.

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