Querying

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Revision as of 18:13, 21 January 2011 by CG (talk | contribs) (→‎Extensions)
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Welcome to the Query Portal, which is one of the 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.

Extensions

Functions

  • Database: Database-related functions
    Prefix: db; URI: http://basex.org/db
  • Full Text: Full-text functions
    Prefix: ft; URI: http://basex.org/ft
  • Utility Functions: Testing and profiling functions
    Prefix: util; URI: http://basex.org/util
  • File Functions: functions for file handling
    Prefix: file; URI: http://basex.org/file
  • HTTP Functions (http): Full-text functions, based on the EXPath HTTP Client Module
    Prefix: http; URI: http://expath.org/ns/http-client
  • Math Functions: functions for mathematical operations, extending the W3C Working Draft
    Prefix: math; URI: http://www.w3.org/2005/xpath-functions/math

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 W3C Working Draft.

Indexes

Queries will be analyzed and optimized for index access on the fly.