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Rapid development of Geographic Information System (GIS) has given rise to great amount of spatial database, around which a large number of GIS applications are being created. A GIS based network application for planning and management being developed in the country has typical requirement for representation of datasets at primary level. This paper examines the representation of such datasets through ER and EER models and summarizes their limitation. In order to represent the evolving database design for GIS based network application Topo-Net Spatial ER was evolved and proposed with focus on representation of spatial, topological, network and generalization aspects and has led to successful conceptual database design.
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