Glossary - Z

Z39.50 (ANSI) (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 (Old adress http://130.228.5.168), 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.
Links:

description. Z39.50 resources.

ZBTSI

Zero Byte Time Slot Interchange (ESF)

[to] Zip (communications, compression)

Verb and file name extension (extension .ZIP, .zip, .gz) that indicates a compression by compression softwares of the "zip/pkzip/gzip" family.

Z-modem

Advanced data transport protocol using modems that transmits data by block with advanced error detection and error recovery methods.

Zone (network)

A logical group of network devices.

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