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An Introduction to XQuery

XML blurs the distinctions between databases, documents, and messages, but it needs a powerful and elegant query language to reach its full potential. XPath does not go far enough. XQuery intends to be that language.


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Part 1: This first article explains basic XQuery concepts such as the different types of query expressions, the language elements, such as user-defined functions, and illustrates them with example queries. Part 2: The XQuery data model recognizes seven types of nodes. Learn how to take advantage of the data model in XQuery expressions

Part 3: Learn how to use XQuery's FLWR (for, let where, and return) expressions to process and restructure data from one or more documents. Part 4: Learn to use XQuery conditional and quantified expressions to filter and select data, and to modify query results by including custom functions.

The Authors:

Srinivas Pandrangi Alex Cheng Dr. Hui Zhang QiDong Xu Jim Gan


   
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