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• Excel 2003 (.xls)

• Excel 2007 – Excel 365 (.xlsx)

Metadata Catalogues

Most large organisations that distribute spatial data, catalogue the existence of that data using a metadata catalogue system such as GeoNetwork opensource (geonetwork-opensource.org). AusSeabed Contributing Hubs must provide a catalogue that can be harvested by AODN (and others). The preferred mechanism employed is an Open Geospatial Consortium (OGC) compliant Catalogue Service for the Web (CSW). AusSeabed requires that metadata entries be systematised to support downstream searching and filtering.

There are several metadata standards for describing spatial data. However, but ISO19115 standard continues to grow in popularity. The standard itself provides a wide range of flexibility in the forms form of XML that it acceptsformat. It is rarely possible for a system to understand the semantics of every component of XML that meets the standard. Likewise, the standard permits different ways of representing the same information. What has have emerged are profiles of the ISO19115 that have agreed meaning among subsets of the spatial community.Key .

• Relevant attributes captured, will be stored in an ISO-19115-3 compliant repository.

  • In GA’s case this will be eCat (ecat.ga.gov.au), which is shared with other external catalogues such as the Australian Ocean Data Network (https://catalogue.aodn.org.au/geonetwork/srv/eng/catalog.search#/home )

• All attributes captured will be stored in the AusSeabed Data Register.

Relevant metadata fields compiled from above must be able to be published using ISO19115-3 metadata through a catalogue service for the web - nominally GeoNetwork. GA uses GeoNetwork as it implements the following protocols to assist in the function of publishing and ingesting metadata:

• OGC CSW (Open Geospatial Consortium – Catalogue Service for the Web)

• OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting)

• OpenSearch

• Z39.50 (Z39.50 and also provides its own API is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network. It is covered by ANSI/ISO standard Z39.50, and ISO standard 23950)

• an Application Programming Interface (API) to interact with other systems and a DCAT/RDF search service.

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