Document Type : Research Paper

Author

• Hamid Kamrani Dalir

Graduate Student of Geomorphology, University of Tehran

Abstract

The spatial databases created on the basis of a systemic structure have prepared the conditions that provide users with the possibility of communication and exploitation among remote sites through the World Wide Web. Websites provide access to a variety of information about land features in graphic and text documents. Global geographical databases are usually established and developed for various purposes. Perhaps software and information content will be continuously upgraded by using and expanding the database. Research on different aspects of the goals of global geographical databases requires other distinct studies. A brief overview of each of the bases is the topic of this paper.

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