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DB2 by Pav Kumar-Chatterjee, Matthias Nicola

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Chapter 19. Performing Full-Text Search

XML applications and data can often be classified in one of two ways: predominantly data-centric or predominantly document- or content-centric. For example, the processing of orders, sales, or trades is typically data-centric while the management of contracts, emails, or news articles is document-centric. Content-centric XML documents often contain significant amounts of free-flow text, including full sentences and paragraphs. Such full text is rare in data-centric XML, which tends to contain atomic data values such as names, dates, prices, quantities, or addresses. Therefore, full-text search is more commonly required for querying content-centric XML than data-centric XML documents.

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