Entity-Relationship Model Versus Extended Semantic Hierarchal Model for Conceptual Modeling
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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This thesis investigates the area of conceptual data modeling and looks for a model to serve as a vehicle for designing improved semantic modeling capabilities. Several possible models are discussed but the Entity-Relationship model and the Extended Semantic Hierarchal Model receive special emphasis. Comparisons will be made of their advantages and disadvantages regarding their suitability for conceptual modeling. The Entity-Relationship Model is chosen as being most capable of supporting enhanced conceptual modeling techniques. Support for this position along with recommended enhancements to the Entity- Relationship Model and a suggestion for an automated graphical design tool to improve its conceptual modeling capabilities are provided in the final chapter.
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