Fig. 2From: The Generalized Data Model for clinical researchHierarchical View of the Generalized Data Model. Note: Table names and key relationships among tables are depicted above. See Additional file 1 for more detail on tables. Tables in green serve as lookup tables across the database. There is a single Addresses table for unique addresses with relationships to Patients, Practitioners, and Facilities, and a single Practitioners table with relationships to Patients and Contexts Practitioners. The Contexts Practitioners table allows multiple practitioners to be associated with a Context recordBack to article page