Triangular Pyramid Framework For Enhanced Object Relational Dynamic Data Model for GIS

GIS (Geographic Information System) data modeling is a methodology for designing spatial databases. Efficient database design is crucial to efficient GIS implementation. A model is a simplification of the complexity of reality, which makes the reality more understandable and operational. The Objective of this paper is to present an overview of various data models and to evolve an approach to design a model which can overcome the identified gaps of various models being studied for a GIS application. The proposed data model i.e. Enhanced Object Relational Dynamic Data Model enhances Object Relational Data Model (EORDM) by introducing reusability and dynamicity for the database . Reusability concept allows storage of distinct objects having same spatial representation onto a single storage space and dynamicity allows creation of relations on user’s requirement. The conceptual data model for the same has been designed named Triangular Pyramid Framework which has been explained in section IV of this paper.