SRW Home Page | Implementors
- Version 1.1 of the SRW specifications are available as of February 13,
2004.
CQL
Home Page | Tutorial | CQL BNF | Context
Sets - CQL is the query language for SRW and SRU, and may be used by
other protocols as well. CQL is designed to be human readable and
writable, while maintaining the expressiveness of more complex languages.
As with SRW, Version 1.1 of the CQL specifications are available as of
February 13, 2004. .
Home | Specification of the abstract
API | Bindings to
various languages and their implementations - The ZOOM initiative
presents an abstract object-oriented API to a subset of the services
specified by the Z39.50 standard, also known as the international standard
ISO 23950.
Home | Overview | ZeeRex DTD -
ZeeRex (rhymes with T. rex) is "Z39.50 Explain, Explained
and Re-Engineered in XML". It is an XML schema used to describe the
configuration and capabilities of Z39.50 and SRW servers.
Overview - XER
provides a mechanism to allow us to provide Z39.50 support over an
alternative "internet" protocol without any additional ammendments to the
current ASN.1 standard. This document outlines an implementors agreement
of how to implement XER over SOAP.
ZING, "Z39.50-International: Next Generation", covers a number of initiatives by Z39.50 implementors to make the intellectual/semantic content of Z39.50 more broadly available and to make Z39.50 more attractive to information providers, developers, vendors, and users, by lowering the barriers to implementation while preserving the existing intellectual contributions of Z39.50 that have accumulated over nearly 20 years.
Current ZING initiatives are SRW (including SRU), CQL, ZOOM, ez3950, and ZeeRex. Some (for example, SRW/U) seek to evolve Z39.50 to a more mainstream protocol, while for others (e.g. ZOOM) the purpose is to preserve the existing protocol but hide its complexity.
The Library
of Congress >> ZING
Last
Updated February 12, 2004