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Efficient implementation of typed view hierarchies for ORDBMS

  • US 6,421,658 B1
  • Filed: 07/30/1999
  • Issued: 07/16/2002
  • Est. Priority Date: 07/30/1999
  • Status: Expired due to Term
First Claim
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1. In a relational database management system, a method for creating a hierarchy view on top of a table hierarchy, comprising:

  • (a) storing a user definition for a table hierarchy and a table type hierarchy, wherein the table hierarchy includes a physical table storing all columns of one or more typed tables in the table type hierarchy; and

    (b) generating a hierarchy view from the table hierarchy and table type hierarchy, wherein the hierarchy view comprises a single unified view on the table hierarchy comprised of one or more logical views for each of the typed tables in the table type hierarchy.

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