资料来源 : Free On-Line Dictionary of Computing

ANSI Z39.50
     
         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 {web site} explains the relevant {ISO}
        {standards} and how they are amicably converging in Z39.50
        version 4.0.
     
        {Overview (http://www.nlc-bnc.ca/ifla/VI/5/op/udtop3.htm)}.
     
        {Z39.50 resources
        (http://lamp.cs.utas.edu.au/net.html#Z3950)}.
     
        (1996-07-22)