1. JOINT SESSION IG Domain Repositories, IG Agriculture Data, WG BioSharing Registry, IG Materials Data, WG Wheat Data RDA P6, Paris, 23-09-2015

2. Metadata Development in Astronomy Robert Hanisch Office of Data and Informatics National Institute of Standards and Technology

3. 3  Developed in the context of the International Virtual Observatory Alliance, beginning in 2002 and iterating/improving through 2007  Based on Dublin Core  Astro-centric extensions  IVOA standard IVOA standard  Deployed in a federated system of Resource Registries with several independent software implementations Discovery Metadata

4. 4 Federated Registry Architecture 4 Data Centers Local Publishing Registry Full Searchable Registry Local Publishing Registry Full Searchable Registry (pull) harvest replicate search queries Users, applications OAI/PMH