Z39.50

Z39.50 is widely used in library environments, often incorporated into integrated library systems and personal bibliographic reference software.

These online libraries are usually based on Z39.50 public protocol.

It is covered by ANSI/NISO standard Z39.50, and ISO standard 23950.

An attempt to remedy the inconsistency is the Bath Profile (named after Bath, England, where the working group first met in 1999).

The Bath Profile is an international Z39.50 Specification for Library Applications and Resource Discovery.

The Contextual Query Language (formerly called the Common Query Language) is based on Z39.50 semantics.

Based on the semantics of Z39.50, its design objective is that queries be human readable and writable, and that the language be intuitive while maintaining the expressiveness of more complex query languages.

The standard's maintenance agency is the Library of Congress.

Areas of work include MARC standards, Metadata Encoding and Transmission Standard (METS), Metadata Object Description Schema (MODS), Z39.50 and Search/Retrieve Web Service (SRW), and Search/Retrieve via URL (SRU).

Wide Area Information Server (WAIS) is a client–server text searching system that uses the ANSI Standard Z39.50 Information Retrieval Service Definition and Protocol Specifications for Library Applications" (Z39.50:1988) to search index databases on remote computers. It was developed in the late 1980s as a project of Thinking Machines, Apple Computer, Dow Jones, and KPMG Peat Marwick.

Koha is a web-based ILS, with a SQL database (MySQL preferred) backend with cataloguing data stored in MARC and accessible via Z39.50 or SRU.

The successors to Z39.50 are the twin protocols SRU/SRW (Search/Retrieve via URL/Search/Retrieve Web service), which drop the Z39.50 communications protocol (replacing it with HTTP) while still attempting to preserve the benefits of the query syntax.

* Z39.50

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network.

It is covered by ANSI/NISO standard Z39.50, and ISO standard 23950.

It is covered by ANSI/NISO standard Z39.50, and ISO standard 23950.

Z39.50 is widely used in library environments, often incorporated into integrated library systems and personal bibliographic reference software.

Z39.50 is widely used in library environments, often incorporated into integrated library systems and personal bibliographic reference software.

Interlibrary catalogue searches for interlibrary loan are often implemented with Z39.50 queries.

An attempt to remedy the inconsistency is the Bath Profile (named after Bath, England, where the working group first met in 1999).

An attempt to remedy the inconsistency is the Bath Profile (named after Bath, England, where the working group first met in 1999).

The Bath Profile is maintained by Library and Archives Canada.

Z39.50 is a pre-Web technology, and various working groups are attempting to update it to fit better into the modern environment.