Common Query Language: differenze tra le versioni

Versione delle 17:07, 12 feb 2008

Versione delle 17:08, 12 feb 2008

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{{t|inglese}}

'''Common Query Language''' o '''contextual query language''' (CQL) è un linguaggio formale [[formal language]] per rappresentare query a sistemi di tipo [[information retrieval]] come [[Motore_di_ricerca]]motori di ricerca, sistemi di catalogazione e collezioni digitali di [[bibliography|bibliographic catalogs]] e [[museum]]. E' basato sulla semantica del protocollo di interrogazione [[Z39.50]], its design objective is that queries be human readable and writable, and that the language be intuitive while maintaining the expressiveness of more complex [[query language]]s. It is being developed and maintained by the Z39.50 Maintenance Agency, part of the [[Library of Congress]].

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* [http://www.loc.gov/z3950/agency/ Z39.50 Maintenance Agency]

* [http://zing.z3950.org/cql/intro.html A Gentle Introduction to CQL]

[[Category:Searching]]

[[Category:Library and information science]]

[[Category:Library of Congress]]

[[en:Common Query Language]]