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Design and Development of Architecture of a National Clearinghouse at the Analysis Level
Ebrahim Omidi G.
MS. Student
Iran
Email: e_omidi@sina.kntu.ac.ir
From early ninety decade, the need for development of national geospatial data clearinghouse was increased in developed countries. Data sharing, data mining, data operability and avoiding parallel activities in production of geospatial data were the reasons that cause more necessity for clearinghouse services. Clearinghouse services can be generally divided in three levels: search, display and analysis. The majority of current clearinghouse services are categorized in search or display level.
At the search level, user can only search for desired geospatial data and can be informed of the attributes and access method to data providing the data exists. At the display level, displaying the found data is added to the capabilities of search level. At the analysis level, not only the capabilities of search or display level exists, but also if the desired data layer does not exist, the system can produce that layer by analyzing the other existing layers and then the user will have quick access to this new layer. This level will require specific meta database architecture and specific components in addition to the components of the other two levels.
In this research the obstacles and prerequisitives of setting up a clearinghouse service at analysis level will be identified and our architecture for this level of clearinghouse will be recommended.
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