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The integration of medical information from various sources is gaining in importance as hospitals and medical research centers attempt to gain new insights into existing data. The Health Level Seven® (HL7®) organization has developed an abstract information model for health-care data, the HL7 Reference Information Model (RIM). We describe in this paper our approach to implementing a physical data model based on RIM. Our approach, which combines elements of entity-relationship data modeling and entity-attribute-value data modeling, involves the modeling of base RIM classes, RIM inheritance, and RIM data types. We incorporated the resulting data model into IBM Clinical Genomics, a product that integrates clinical and genomic data in a way that enables medical researchers to carry out clinical research.
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