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Online Computer Terms Dictionary - A

ANSI Z39.50

<networking, standard> Information Retrieval Service Definition and Protocol Specification for Library Applications, officially known as ANSI/NISO Z39.50-1992, and ANSI/NISO Z39.50-1995. This standard, used by WAIS, specifies an OSI application layer service to allow an application on one computer to query a database on another.

Z39.50 is used in libraries and for searching some databases on the Internet. The US Library of Congress is the official maintanence agency for Z39.50.

Index Data, a Danish company, have released a lot of Z39.50 code. Their website explains the relevant ISO standards and how they are amicably converging in Z39.50 version 4.0.


Z39.50 resources.



Nearby terms: ANSI/SPARC Architecture ANSI/SPARC model ANSI X12 ANSI Z39.50 Anthony Hoare anti-aliasing antichain