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<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 (http://lcweb.loc.gov/z3950/agency/) 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 (http://lamp.cs.utas.edu.au/net.html#Z3950).
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