Difference between revisions of "Querying"

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Welcome to the Query Portal, which is one of the [[Main Page|main]] sections of this documentation. Here your find more information on performing XPath and XQuery requests. Apart from standard features, BaseX offers numerous extensions, which are listed on this page.
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==Extensions==
 
* [[Full-Text]]: full-text features of XQuery
 
* [[Update]]: update mechanism of XQuery
 
* [[Java Bindings]]: how to call Java methods from XQuery
 
* [[XQuery 3.0]]: supported features of the upcoming [http://www.w3.org/TR/xquery-30/ W3C XQuery 3.0] Recommendation
 
 
 
==Functions==
 
* [[Database Functions|Database]]: Database-related functions<br />Prefix: <tt>db</tt>; URI: <tt><nowiki>http://basex.org/db</nowiki></tt>
 
* [[Full-text Functions|Full Text]]: Full-text functions<br />Prefix: <tt>ft</tt>; URI: <tt><nowiki>http://basex.org/ft</nowiki></tt>
 
* [[Utility Functions]]: Testing and profiling functions<br />Prefix: <tt>util</tt>; URI: <tt><nowiki>http://basex.org/util</nowiki></tt>
 
* [[File Functions]]: functions for file handling<br />Prefix: <tt>file</tt>; URI: <tt><nowiki>http://basex.org/file</nowiki></tt>
 
* [[HTTP Functions]] (<tt>http</tt>): Full-text functions, based on the [http://expath.org/spec/http-client EXPath HTTP Client Module]<br />Prefix: <tt>http</tt>; URI: <tt><nowiki>http://expath.org/ns/http-client</nowiki></tt>
 
* [[Math Functions]]: functions for mathematical operations, extending the [http://www.w3.org/TR/xpath-functions-30/ W3C Working Draft]<br />Prefix: <tt>math</tt>; URI: <tt><nowiki>http://www.w3.org/2005/xpath-functions/math</nowiki></tt>
 
 
 
Note that all namespace URIs are statically bound in BaseX, i.e., they need not be declared in the query prolog.
 
A complete list of the approved and planned XQuery 3.0 functions is found in the current [http://www.w3.org/TR/xpath-functions-30/ W3C Working Draft].
 
 
 
==Indexes==
 
Queries will be analyzed and optimized for index access on the fly.
 
 
 
*[[Indexes|Overview]]: All indexes and their functionality
 
*[[Execution Plan]]: Execution plans of the queries
 
 
 
[[Category:XQuery]]
 

Latest revision as of 20:39, 31 March 2012

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