ANSI Z39.50
\ˈansi zˈɛd θˈɜːtinˈa͡ɪn pɔ͡ɪnt fˈa͡ɪv zˈi͡əɹə͡ʊ], \ˈansi zˈɛd θˈɜːtinˈaɪn pɔɪnt fˈaɪv zˈiəɹəʊ], \ˈa_n_s_i z_ˈɛ_d θ_ˈɜː_t_i_n_ˈaɪ_n p_ɔɪ_n_t f_ˈaɪ_v z_ˈiə_ɹ_əʊ]\
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Information Retrieval ServiceDefinition and Protocol Specification for LibraryApplications, officially known as ANSI/NISO Z39.50-1992, andANSI/NISO Z39.50-1995. This standard, used by WAIS,specifies an OSI application layer service to allow anapplication on one computer to query a database on another.Z39.50 is used in libraries and for searching some databaseson the Internet. The US Library of Congress(http://lcweb.loc.gov/z3950/agency/) is the officialmaintanence agency for Z39.50.Index Data, a Danish company, have released a lot of Z39.50code. Their website explains the relevant ISO standardsand how they are amicably converging in Z39.50 version 4.0.Overview (http://nlc-bnc.ca/ifla/VI/5/op/udtop3.htm).Z39.50 resources(http://lamp.cs.utas.edu.au/net.html#Z3950).
By Denis Howe
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.