4/8/2023 0 Comments Visual paradigm comparison![]() ![]() You also need to have basic knowledge in database design and data modeling with Visual Paradigm. In order to complete this tutorial you must have Visual Paradigm installed. After that, we will make use of Visual Diff, a tool for comparing changes between diagrams, to trace the differences between them. In this tutorial, we'll see how to make use of Model Transitor to transcribe a logical ERD into physical ERD. Visual Paradigm's Model Transitor enables you to transit a logical ERD to a physical ERD with the transition relationship well maintained. Since physical ERD and logical ERD represent the business requirement and database schema respectively, comparing physical and logical ERD helps to find out the differences between them, thus confirming the database is exactly following the initial business requirements regardless of the changes. Sometimes, relationships need to be resolved by introducing additional tables, like a Linked table for a many to many relationship. When modeling a physical ERD, Logical ERD is treated as base, refinement occurs by defining primary keys, foreign keys and constraints. It deals with conversion from logical design into a schema level design that will be transformed into relational database. Physical ERD represents the actual design of database. The need of satisfying the database design is not considered yet. Entities and relationships modeled in such ERD are defined around the business's need. 1 Preventing visual disability from glaucoma and preserving the visual-related quality of life (VR QoL) are arguably the ultimate therapeutic goals in glaucoma management.Logical ERD models information gathered from business requirements. The primary outcome is the outcome measure that has the greatest importance according to the various stakeholders (investigators, patients, policymakers, funding bodies, pharmaceutical companies). ![]() A poorly chosen primary outcome may invalidate the results of otherwise well-designed and rigorously conducted trials, producing unreliable results and wasting resources. The choice of primary outcome is critical in randomised controlled trials (RCTs), and determines the sample size. As a result, PROMs are increasingly used as endpoints in clinical trials across all medical fields, including, recently, glaucoma. The widespread use of PROMs across all fields of medicine has caused a paradigm shift in clinical research, with patients’ perception becoming a major determinant of therapeutic interventions’ outcomes. A variety of validated PROMs, either with generic or disease-specific constructs, are available in ophthalmology to measure the effect of a given eye condition on the overall health function and disease-specific features (eg, symptoms, treatment side effects, coping), respectively. In the attempt to provide more patient-centred holistic care, there has been increasing interest in patient-reported outcomes (PROs) and patient-reported outcomes measures (PROMs), which are any self-reported health status directly reported by patients and the tools (usually questionnaires) used to measure them, respectively. In the 19th century, Sir William Osler, one of the fathers of modern medicine, stated that ‘The good physician treats the disease the great physician treats the patient who has the disease’, indicating that, as clinicians, we should pursue a patient-centred, rather than disease-centred approach.
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