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Abstract

A map management system in a geographic information management system which manages different kinds of maps with use of a computer. The map management system involves a map managing unit that prepares map databases for respective attributes, manages the databases, and allocates the attributes in accordance with an access right for the databases. A map processor accesses the databases through the map managing unit, retrieves necessary data from the databases, and displays the data. Different kinds of maps are separately stored in separate databases so that each map is separately retrievable. Several kinds of maps can be simultaneously retrieved. An access right is allocated for each of the separate databases depending on the importance of the attributes. According to the access right for a given database, the map managing unit determines whether data contained in the database is displayable, or displayable and correctable.

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First Claim