User Database Interaction: An Objective Abstraction Level Theory
نویسنده
چکیده
ion levels that can be objectively distinguished and can be applied to smaller units. For example, current definitions of the conceptual level as a level for communications between user and analyst are not fully objective. Well-trained users and analysts may find the relational model easy for communication (Siau, 2004). Or people may simply have different opinions and preferences on the models that best provide ease of communication. Definitions of the conceptual level as a level independent of system implementation are dependent on technology. What is implemented is a moving criterion. These definitions apply to a model, and there is no way to further distinguish smaller units. Figure 1. Abstraction level view of user-database interaction A bs tr ac tio n le ve ls User-database tasks Modeling Query Update Comprehension Problem solving Conceptual level Conceptual modeling Conceptual query Conceptual update Conceptual comprehension Conceptual problem solving Logical level Logical modeling Logical query Logical update Logical comprehension Logical
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