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Variant domains and variant maps in a versioned database management system

  • US 5,386,559 A
  • Filed: 07/16/1992
  • Issued: 01/31/1995
  • Est. Priority Date: 07/16/1992
  • Status: Expired due to Fees
First Claim
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1. A computer implemented method for providing simultaneous visibility to a plurality of variant hierarchies in a versioned data management system, comprising the steps of:

  • associating parts with variant domains, each part associated with a respective variant domain;

    representing variant domains by variant hierarchies;

    upon creation of a new variant of a part, associating with the new variant a variant ID included in the variant hierarchy that represents the variant domain associated with the part;

    upon drawing down a new variant of a part from an existing variant of the part, associating with the new variant a variant ID signifying having a lower level in the variant hierarchy than the variant ID of the existing variant on the same branch of the variant hierarchy that represents the variant domain associated with the part; and

    representing views of the parts by variant maps, each variant map including a set of variant IDs, each variant ID belonging to a different variant domain.

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