4 research outputs found
IVOA Recommendation: Resource Metadata for the Virtual Observatory Version 1.12
An essential capability of the Virtual Observatory is a means for describing
what data and computational facilities are available where, and once
identified, how to use them. The data themselves have associated metadata
(e.g., FITS keywords), and similarly we require metadata about data collections
and data services so that VO users can easily find information of interest.
Furthermore, such metadata are needed in order to manage distributed queries
efficiently; if a user is interested in finding x-ray images there is no point
in querying the HST archive, for example. In this document we suggest an
architecture for resource and service metadata and describe the relationship of
this architecture to emerging Web Services standards. We also define an initial
set of metadata concepts
IVOA Recommendation: IVOA Identifiers Version 1.12
An IVOA Identifier is a globally unique name for a resource. This name can be
used to retrieve a unique description of the resource from an IVOA-compliant
registry. This document describes the syntax for IVOA identifiers as well as
how they are created. An IVOA identifier has two separable components that can
appear in two equivalent formats: an XML-tagged form and a URI-compliant form.
The syntax has been defined to encourage global-uniqueness naturally and to
maximize the freedom of resource providers to control the character content of
an identifier
IVOA Recommendation: VOResource: an XML Encoding Schema for Resource Metadata Version 1.03
This document describes an XML encoding standard for IVOA Resource Metadata,
referred to as VOResource. This schema is primarily intended to support
interoperable registries used for discovering resources; however, any
application that needs to describe resources may use this schema. In this
document, we define the types and elements that make up the schema as
representations of metadata terms defined in the IVOA standard, Resource
Metadata for the Virtual Observatory [Hanicsh et al. 2004]. We also describe
the general model for the schema and explain how it may be extended to add new
metadata terms and describe more specific types of resources