Abstract: A figure management system in which plural kinds of figures concerning the same part to be managed are modified. The figure management system includes a figure DB for storing data of figures including topological figures, an attribute DB for storing object attribute data, input and output devices, and a computer for managing figure and object attribute data. An ID code common to features indicating the same object is assigned. On input of a new figure, feature-attribute matching is performed between a feature having no ID code on the new figure and existent object attribute data. If any inconsistency is found the feature is indicated as a discrepant feature or a renewed feature.

Abstract: A geographic information display control system displays objective geographic information using geographic data stored in a plurality of databases. A plurality of geographic data acquiring units instruct acquiring conditions, including a job script generated from a job selection, for acquiring the geographic data stored in the plurality of databases, and a processing request receiver determines, based on an attribute of the geographic data necessary for displaying the objective geographic information, which geographic data acquiring processor among the plurality of geographic data acquiring processors is requested to execute processing. As a result, a user can obtain required geographic data without knowledge of where the desired geographic data is or without being aware of where the knowledge is prepared.

Abstract: A geographic information display control system displays objective geographic information using geographic data stored in a plurality of databases. A plurality of geographic data acquiring units instruct acquiring conditions, including a job script generated from a job selection, for acquiring the geographic data stored in the plurality of databases, and a processing request receiver determines, based on an attribute of the geographic data necessary for displaying the objective geographic information, which geographic data acquiring processor among the plurality of geographic data acquiring processors is requested to execute processing. As a result, a user can obtain required geographic data without knowledge of where the desired geographic data is or without being aware of where the knowledge is prepared.

Abstract: The present invention offers a feature data management method which provides data indicating created time and destroyed time of geographic object for feature data, thereby increasing the speed and facilitating a search in time direction. By this method, for example, if the building C is built at time Ts and destroyed at time Te, created time Ts and destroyed time Te of geographic object C are registered in the feature data, whereby it can be managed by a database that the geographic object C existed only between times Ts and Te.

Abstract: An integrated data structure is provided which can be maintained and managed by selectively using data storage forms for storing graphic data representing three-dimensional figures, such as houses, roads, underground piping and the like, according to the properties of an object figure and mixing the same. Three control flags respectively specifying three kinds of operations for extension to be carried out for extending two-dimensional graphic data comprising two-dimensional coordinates (x, y) can be selectively used. An extension 1 to specify the component points of a figure by coordinates (x, y, z), an extension 2 to specify a z-coordinate indicating the altitude of a figure for the figure, and an extension 2 to specify a value d and information f indicating the construction of a figure having a predetermined shape and a method of display are used individually or in combination to form a three-dimensional figure.