Functional Requirements for Querying XML (Dave Maier, W3C QL 98)

• Selection and Extraction:

  • all sci-fi books by P.K. Dick

• Reduction:

  • drop all authors but 1st author

• Combination:

  • combine all books with their customers via isbn

• Restructuring:

  • return flat lists of title/author pairs
  • and vice versa

• Multidocument Handling:

  • get reviews and books from different sites
  • follow (dereference) links in books to authors

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