A Conceptual Data Model for Health Information Systems

摘要

The development of Health Information Systems based on dual models allows modifications to be conducted in the layer of archetypes, reducing dependencies on software developers. However, we identified a lack of conceptual models to represent two-level database entities. This paper proposes a novel conceptual data model, called ArcheER, which is a dual modeling approach and aims to reduce redundant entities and guarantee the creation of unique electronic health records. ArcheER is an extension of the Entity-Relationship model and is based on archetypes. A CASE modeling tool based on ArcheER is outlined. Finally, to illustrate the key features of the proposed model, an ArcheER conceptual schema built for a legacy system is discussed, and results collected from a test with 18 human subjects are reported. Results indicated a reduction of 83,35% in the representation of redundant entities and a gain of 78,9% concerning the modeling of entities characterizing knowledge.