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Techniques for managing hierarchical data with link attributes in a relational database

  • US 6,965,903 B1
  • Filed: 11/26/2002
  • Issued: 11/15/2005
  • Est. Priority Date: 05/07/2002
  • Status: Expired due to Term
First Claim
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1. A method for managing, in a relational database, hierarchical data about a hierarchy of nodes related by a plurality of links, the method comprising the step of:

  • managing a link table which, for each link of the plurality of links, includes;

    first information that indicates a first node in the hierarchical data;

    second information that indicates a second node in the hierarchical data, wherein the second node is associated with the first node by the link; and

    link information that indicates one or more values for one or more link attributes of the link and does not indicate a value for any attribute of the first node alone or any attribute of the second node alone.

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