Z39.50
"Z39.50" refers to the International Standard, ISO 23950: "Information Retrieval (Z39.50): Application Service Definition and Protocol Specification", and to ANSI/NISO Z39.50.
The standard specifies a client/server-based protocol for searching and retrieving information from remote databases.
The Library of Congress is the Maintenance Agency and Registration Authority for both standards, which are technically identical (though with minor editorial differences).
Literature:
Wikipedia, the free encyclopedia. Z39.50. http://en.wikipedia.org/wiki/Z39.50
NISO (National Information Standards Organization): Z39.50 Resource Page: http://www.niso.org/z39.50/z3950.html#info
Birger Hjørland
Last edited: 23-03-2006