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Querying markup language data sources using a relational query processor

  • US 20030212664A1
  • Filed: 05/10/2002
  • Published: 11/13/2003
  • Est. Priority Date: 05/10/2002
  • Status: Active Grant
First Claim
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1. A method of querying data in a mark-up language document stored in a data source, the mark-up language document containing a plurality of nodes, the method comprising:

  • receiving, in response to a request to extract a node from the document, a data stream including a parent node;

    evaluating the parent node with respect to a query; and

    requesting, in response to evaluating the query, one or more nodes in a nested relationship with the parent node if the parent node satisfies the query.

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