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Metadata Standards

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UK GEMINI (Geo-spatial Metadata Interoperability Initiative)

UK GEMINI (Geo-spatial Metadata Interoperability Initiative)
The UK GEMINI
profile is the result of a year-long collaboration between the Association for Geographic Information (AGI) and the Cabinet Office e-Government Unit, with additional representation from national and local government, and the academic community. The standard document is supplemented by a set of guideline documents giving additional advice and best practice.

NOTE: UK GEMINI v 1.0 is the currently used version of the standard. Version 2 will be compatible with the INSPIRE Implementing Rules (IR) for Metadata.

A draft of this, v 2.1, has been produced, compatible with v 2 of the INSPIRE IR. However this version is not final and will be subject to further change. A final draft of UK GEMINI v 2 will be produced when the INSPIRE IR are finalised, expected to be in May 2008

UK GEMINI Standard v1.0

UK GEMINI Standard v 2.1 (See note above)

Guidelines for UK-GEMINI

Part 1 Introduction
Covers the basics of metadata

Part 2 Creating Metadata using UK GEMINI
Provides a set of detailed guidelines for compiling UK GEMINI metadata elements.

Part 3 Metadata Quality
Deals with metadata quality and covers quality evaluation and quality management of metadata including guidance on establishing acceptable quality levels.


ISO 19115/19139
The new international standard ISO 19115/19139 Geographic Information: Metadata supercedes the Gigateway/NGDF Discovery Metadata Specification, via the UK national profile - UK GEMINI. Implementation is scheduled for 2006 against current estimations but this is dependent on release of ISO 19139, the XML schema implementation for 19115. ISO 19115, the content part of the standard, has already been published and is available, at a discounted rate, from the AGI. Please contact Susan Walter to obtain a copy.


Gigateway Discovery Metadata Specification (Formerly the NGDF Standard)
The standard formulated by the now moribund National Geospatial Data Framework (NGDF) was renamed the Gigateway Discovery Metadata Specifications in 2002 . It is essentially the Dublin Core Metadata Standard with an extension for handling spatial coordinates. This specification has now been superceded by the UK GEMINI profile and should not be used for new metadata sets.

Gigateway Discovery Metadata Specifications, v3.0
Gigateway Discovery Metadata Transfer Format and Communications Protocol Specifications, v3.0
Guidelines for creating "gigateway-approved" metadata elements

e-GMS (e-Government Metadata Standard)
The e-Government Metadata Standard lays down the elements, refinements and encoding schemes to be used by government officers when creating metadata for their information resources or when designing search systems for information systems. The e-GMS forms part of the e-GIF.

The e-GMS is required to ensure maximum consistency of metadata across public sector organisations. View the e-GMS here.



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