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XML schema evolution

  • US 7,370,270 B2
  • Filed: 10/23/2002
  • Issued: 05/06/2008
  • Est. Priority Date: 10/23/2002
  • Status: Active Grant
First Claim
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1. A computer-implemented method for evolving a first XML schema to a second XML schema in application involving a plurality XML documents which are valid against said first XML schema, comprising the steps of:

  • performing a plurality of schema manipulation operations to the first XML schema to generate the second XML schema, the schema manipulation operations including operations of the group including;

    inserting a schema segment, deleting a schema segment, replacing a schema segment;

    validating the plurality of schema manipulation operations by performing operations comprising;

    determining whether a second set containing all valid XML documents of said second XML schema contains a first set containing all valid XML documents of said first XML schema.

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