VOResource: an XML Encoding Schema for Resource Metadata Version 1.1

This document describes an XML encoding standard for IVOA Resource Metadata, referred to as VOResource. This schema is primarily intended to support metadata exchange between in interoperable registries and resource discovery within them. 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 in close alignment to the metadata terms defined in Resource Metadata for the Virtual Observatory

(Hanisch and IVOA Resource Registry Working Group et al., 2007), but also taking into account other metadata standards as well as experiences from the operation of the VO Registry. 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.