Metadata State of Play - Compliance Testing and Interoperability Checking

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The rapid increase of spatial data, proprietary software and the implementation of location based technologies to many modern industrial and business activities has created a need to maximise the open exchange of information between geospatial enabled parties. Since the mid nineteen nineties a whole series of international, regional and national spatial data infrastructures (SDI) have been established.

The DIRECTIVE 2007/2/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 14 March 2007 establishes an Infrastructure for Spatial Information in the European Community (INSPIRE)

The overall aim of the INSPIRE proposal is to improve the way in which spatial data held by public authorities supports environmental policy, by improving the harmonisation of spatial data and the interoperability of spatial services and ensuring greater sharing of the data between public authorities and on-line access by the public.

The Directive requires Member States to take a set of measures, ranging from the type of data shared between users and application up to the network of services that allow searching for, viewing and accessing these data.

The present study focuses mainly on some of these measures, and precisely, on certain types of information regarding the data. This information about data is called metadata.

Since metadata can be used to semantically describe other information, the INSPIRE programme has defined exactly what type of description will be required for compliancy (see Inspire Metadata

Implementing Rule), that is:
• Metadata on metadata is needed to know what the status is of the metadata itself;
• Discovery metadata that can be implemented at two levels.
– Level 1 metadata ensures the needed linked between the expert and the non-expert users.
– Level 2 metadata are detailed enough for high-level discovery of spatial resources by expert users.

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