The Virtual Observatory Registry
Markus Demleitner, Gretchen Greene, Pierre Le Sidaner, Raymond L., Plante

TL;DR
The paper details the development and standardization of the Virtual Observatory Registry system, which enables resource discovery and management for astronomical data and services, highlighting server-side standards and practices.
Contribution
It provides a comprehensive overview of the server-side standards, resource record formats, harvesting processes, and identifier management in the VO Registry system.
Findings
Standardization of registry server components
Guidelines for resource record creation and management
Discussion of open issues and usage patterns
Abstract
In the Virtual Observatory (VO), the Registry provides the mechanism with which users and applications discover and select resources -- typically, data and services -- that are relevant for a particular scientific problem. Even though the VO adopted technologies in particular from the bibliographic community where available, building the Registry system involved a major standardisation effort, involving about a dozen interdependent standard texts. This paper discusses the server-side aspects of the standards and their application, as regards the functional components (registries), the resource records in both format and content, the exchange of resource records between registries (harvesting), as well as the creation and management of the identifiers used in the system based on the notion of authorities. Registry record authors, registry operators or even advanced users thus receive a…
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