Entity-relationship and object-oriented formalisms for modeling spatial environmental data
Environmental Modelling & Software
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We stress the need of a domain-tailored requirements engineering method for the development of GIS-applications. To this end, we discuss three GIS-application scenarios, the so-called topological scenario, the network scenario and the (spatio-) temporal scenario, we frequently encountered in real life projects. Our investigations reveal that conventional RE-methods like e.g. Coad/Yourdon's Object-Oriented Analysis (OOA) are not capable to model GIS-specific requirements appropriately. To overcome the deficiencies of conventional OOA we introduce GeoOOA which complements OOA by suitable domain-tailored primitives and allows for a more adequate treatment of GIS-specific requirements. We provide GeoOOA-models of a broadcasting corporation, an electric power supply system and a land registry as first validation steps for the usefulness of GeoOOA.