Browse Prior Art Database

Geographical Data System

IP.com Disclosure Number: IPCOM000113666D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Bittig, W: AUTHOR

Abstract

The architecture of a geographical and technical information system is characterised by a database in which all information (geographical data and attributes, image data and networking data) is saved in the forms of objects. In such a database, maps are not stored as leaves but as one continuous digital sheet. To access this sheet, the system extracts portions from the database and prepares them for display. The portions are displayed as rectangles on a display screen. Definition of extraction windows is carried out using a pointing device or by specifying the coordinates of the desired map portion.

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Geographical Data System

      The architecture of a geographical and technical information
system is characterised by a database in which all information
(geographical data and attributes, image data and networking data) is
saved in the forms of objects.  In such a database, maps are not
stored as leaves but as one continuous digital sheet.  To access this
sheet, the system extracts portions from the database and prepares
them for display.  The portions are displayed as rectangles on a
display screen.  Definition of extraction windows is carried out
using a pointing device or by specifying the coordinates of the
desired map portion.

      Within the map portion, individual features may be accessed as
objects.  Each of the objects contains information related to the
feature on the map, such as attributes, coordinate on the map, etc.

      The user of the system can either access the objects on the map
portions in read-only mode or in updatable mode.  If the objects are
accessed in updatable mode, then further access by another user is
locked to ensure data integrity of the system.