MRDB 5
- 1. Chapter 5 Modeling Health Information System
- 2. Lecture 5: Objectives After this lecture, you should be able to answer the following questions: •What are models and what are metamodels? •Specify factors determining what will be included in Health information systems model •What are the typical types of meta models for HIS? •What are the Steps of creating HIS Metamodels
- 3. What are models and what are metamodels?
- 4. Modeling Health Information Systems Models When dealing with systems in general and with HIS in particular, we need models of for the system. A model simulates real world in a digital form: Process Functions Procedures Rules
- 5. Meta Modeling Health Information Systems A meta model can be understood as a language for constructing models of a certain class and a guideline for using the language. A large number of different classes of models exists. Each class of models is determined by a certain metamodel
- 6. 1.6 Example from databases model and meta model Model System Meta-model Meta-meta-model Relational data model: Tables, attributes, tuples Database schema: Student, Course, Enrolment … Database tables of tuples: (andreas, muster, 07-123-123), … Real world: You, MMS, … «represented-by» «instance-of» «instance-of»
- 7. Factors determining what will be included in Health information systems model
- 8. Which hospital functions are supported by a HIS? Which information processing tools are used? What information is needed, if a patient shall be admitted to the hospital? What information can be provided afterwards? What will happen if a specific server breaks down? How can the quality of information processing be judged? Factors determining what will be included in Health information systems model
- 9. Typical types of metamodels for HIS
- 10. Typical types of metamodels for HIS • Organizational Metamodels, Which Are Used To Create Models Of The Organizational Structure Of HIS. • Data Metamodels, Which Are Used For Building Models Of The Structure Of Data Processed And Stored Inside A HIS. • Business Process Metamodels, Which Focus On The Description Of What Is Done In Logical Order.
- 11. Typical types of metamodels for HIS • Functional Metamodels, Focusing On Hospital Functions That Are Supported By The Information System. • Technical Metamodels, Which Are Used To Build Models Describing The Information Processing Tools Used.
- 12. Typical types of metamodels for HIS • Information System Metamodels, Which Combine Different Metamodels Into An Integrated, Enterprise-wide View On Information Processing In An Institution.
- 13. Modeling Health Information Systems Steps of creating HIS Metamodels
- 14. Steps of creating HIS Metamodels 1. Define the questions or tasks to be solved by the HIS model 2. Select an adequate metamodel 3. Gather the information needed for modeling 4. Create the model
- 15. Steps of creating HIS Metamodels 5- Analyze and interpret the model (answer your questions) 6- Evaluate if the right metamodel was chosen, that is, if the model was adequate to answer the questions. If not, return to step 2
Editor's Notes
- #6: A metamodel can be understood as a language for constructing models of a certain class and a guideline for using the language A large number of different classes of models exists. Each class of models is determined by a certain metamodel