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| | XQuery - Wikipedia, the free encyclopedia |
 | | XQuery is a query language (with some programming language features) that is designed to query collections of XML data. | | | XQuery 1.0 is being developed by the XML Query working group of the W3C. | | | The type system of the language models all values as sequences (a singleton value is considered to be a sequence of length one). |
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http://en.wikipedia.org/wiki/XML_query_language
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| | XQL (XML Query Language) |
| | Namespaces are preserved in the output of a query. | | | Queries are done in XQL, a query language that uses the structure of XML documents as a basic model. | | | Queries are done in SQL, a query language that uses the structure of tables as a basic model. |
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http://www.ibiblio.org/xql/xql-proposal.html
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| | XQuery: An XML query language |
| | XML data are different from relational data in several important respects that influence the design of a query language. | | | A query consists of a prolog that establishes the processing environment, and an expression that generates the result of the query. | | | The functions defined in the query prolog may be used in the query body or in the bodies of other functions. |
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http://www.research.ibm.com/journal/sj/414/chamberlin.html
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| | Cover Pages: XML and Query Languages |
| | The XQL paper proposes to use the XSL pattern language as the basis for a general query mechanism. | | | The document "specifies goals, requirements, and usage scenarios for the W3C XML Query data model, algebra, and query language." The goal of the XML Query Working Group is "to produce a data model for XML documents, a set of query operators on that data model, and a query language based on these query operators. | | | XML data, on the other hand, may be 'sparse'...; (5) In a relational database, the rows of a table are not considered to have an ordering other than the orderings that can be derived from their values. |
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http://www.oasis-open.org/cover/xmlQuery.html
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| | XQuery 1.0: An XML Query Language |
| | In XQuery, a query is represented as an expression. | | | This specification defines XML Query Language (XQuery), a query language that uses XML structure to express intelligent queries across all structured and semistructured XML data sources. | | | XQuery is originally derived from the XML query language |
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http://www.xml.com/pub/r/979
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| | W3C XML Query (XQuery) |
| | XQuery, the Query Language of the Future, Jul 2003. | | | The XML Query language has already been widely implemented even though it is not yet final, and there is a lot of interest in its development. | | | The XML Query Working Group also develops a number of specifications that are shared with the XSL Working Group, so that XML Query and XSLT 2 both benefit from the overlap. |
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http://www.w3.org/XML/Query
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| | XQuery: The XML Query Language - $34.99 |
| | Four years later, the working group is now finalizing the first version of the query language known as XQuery that combines important aspects of the last twenty-plus years of research in languages and data management such as declarativity, composability, functional semantics, and formal type systems. | | | Written by the Technical Lead for XML query processing at Microsoft, XQuery: The XML Query Language is an invaluable resource for XQuery novices and experts alike. | | | When I first encountered XML in 1997, while working at Stanford University as a research associate on semi-structured data management and information integration, it quickly became clear to me that XML will play an important role in modeling markup and semi-structured data and serve as a lingua franca for information exchange. |
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http://www.awprofessional.com/title/0321165810
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