Pal gov.tutorial1.session1 2.conceptualdatamodelingusingorm
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This document provides an introduction to Object-Role Modeling (ORM), which is a conceptual modeling language. ORM uses a graphical notation to represent information and can be used for database modeling, business rules, ontologies, and other scenarios. The key constructs in ORM include object types, relations between objects, and constraints. Several examples are provided to illustrate how ORM can be used to model concepts such as books, authors, and an eGovernment ontology. Other modeling approaches like ER and UML are briefly discussed in comparison to the benefits of ORM for conceptual modeling.
Pal gov.tutorial1.session1 2.conceptualdatamodelingusingorm
- 1. أكاديمية الحكومة اإللكترونية الفلسطينية The Palestinian eGovernment Academy www.egovacademy.ps Tutorial 1: Data and Business Process Modeling Session 1.2 Conceptual Data Modeling using Object-Role Modeling (ORM) Prof. Mustafa Jarrar Sina Institute, University of Birzeit mjarrar@birzeit.edu www.jarrar.info Reviewed by Prof. Marco Ronchetti, Trento University, Italy PalGov © 2011 1
- 2. About This tutorial is part of the PalGov project, funded by the TEMPUS IV program of the Commission of the European Communities, grant agreement 511159-TEMPUS-1- 2010-1-PS-TEMPUS-JPHES. The project website: www.egovacademy.ps Project Consortium: Birzeit University, Palestine University of Trento, Italy (Coordinator ) Palestine Polytechnic University, Palestine Vrije Universiteit Brussel, Belgium Palestine Technical University, Palestine Université de Savoie, France Ministry of Telecom and IT, Palestine University of Namur, Belgium Ministry of Interior, Palestine TrueTrust, UK Ministry of Local Government, Palestine Coordinator: Dr. Mustafa Jarrar Birzeit University, P.O.Box 14- Birzeit, Palestine Telfax:+972 2 2982935 mjarrar@birzeit.eduPalGov © 2011 2
- 3. © Copyright Notes Everyone is encouraged to use this material, or part of it, but should properly cite the project (logo and website), and the author of that part. No part of this tutorial may be reproduced or modified in any form or by any means, without prior written permission from the project, who have the full copyrights on the material. Attribution-NonCommercial-ShareAlike CC-BY-NC-SA This license lets others remix, tweak, and build upon your work non- commercially, as long as they credit you and license their new creations under the identical terms. PalGov © 2011 3
- 4. Tutorial Map Intended Learning Objectives Topic Time Module 1 (Conceptual Date Modeling) Module I: Conceptual Data Modeling A: Knowledge and Understanding 11a1: Demonstrate knowledge of conceptual modeling notations and concepts Session 0: Outline and Introduction 11a2: Demonstrate knowledge of Object Role Modeling (ORM) methodology. Session 1.1: Information Modeling 1 11a3: Explain and demonstrate the concepts of data integrity & business rules Session 1.2: Conceptual Data Modeling using ORM 1 B: Intellectual Skills Session 1.3: Conceptual Analyses 1 11b1: Analyze application and domain requirements at the conceptual level, Session 2: Lab- Conceptual Analyses 3 and formalize it using ORM. Session 3.1: Uniqueness Rules 1.5 11b2: Analyze entity identity at the application and domain levels. Session 3.2: Mandatory Rules 1.5 11b4: Optimize, transform, and (re)engineer conceptual models. Session 4: Lab- Uniqueness & Mandatory Rules 3 11b5: Detect &resolve contradictions & implications at the conceptual level. Session 5: Subtypes and Other Rules 3 C: Professional and Practical Skills Session 6: Lab- Subtypes and Other Rules 3 11c1: Using ORM modeling tools (Conceptual Modeling Tools). Session 7.1: Schema Equivalence &Optimization 1.5 Module 2 (Business Process Modeling) Session 7.2: Rules Check &Schema Engineering 1.5 A: Knowledge and Understanding Session 8: Lab- National Student Registry 3 12a1: Demonstrate knowledge of business process modeling notations and concepts. Module II: Business Process Modeling 12a2: Demonstrate knowledge of business process modeling and mapping. 12a3: Demonstrate understand of business process optimization and re-engineering. Session 9: BP Management and BPMN: An Overview 3 B: Intellectual Skills Session 10: Lab - BP Management 3 12b1: Identify business processes. Session 11: BPMN Fundamentals 3 12b2: Model and map business processes. Session 12: Lab - BPMN Fundamentals 3 12b3: Optimize and re-engineer business processes. Session 13: Modeling with BPMN 3 C: Professional and Practical Skills Session 14: Lab- Modeling with BPMN 3 12c1: Using business process modeling tools, such as MS Visio. Session 15: BP Management & Reengineering 3 Session 16: Lab- BP Management & Reengineering 3 PalGov © 2011 4
- 5. Session ILOs After completing this session students will be able to: 11a1: Demonstrate knowledge of conceptual modeling notations and concepts 11a2: Demonstrate knowledge of Object Role Modeling (ORM) methodology. 11c1: Using ORM modeling tools (Conceptual Modeling Tools). PalGov © 2011 5
- 6. Remark: this tutorial is about Object-Role Modeling (ORM), Not Object-Relational Mapping (ORM) PalGov © 2011 6
- 7. Object-Role Modeling (ORM) Room Time Activity Code Activity Name 20 Mon 9am VMC VisioModeler Class 20 Tue 2pm VMC VisioModeler Calss 33 Mon 9am AQD ActiveQuery Demo 33 Fri 5 pm SP Staff party … … … … Time (dh) Room Activity Activity (Nr) (code) Name …at … is booked for… Has / refers to 20 Mon 9am VMC AQD ActiveQuery Demo 20 Tue 2pm VMC SP Staff party 33 Mon 9am AQD VMC VisioModeler Calss 33 Fri 5pm SP VMC VisioModeler Class … … … Y2K Year 200 seminar PalGov © 2011 … … 7
- 8. Object-Role Modeling (ORM) Representing information graphically MovieName ReleaseYear Director Stars Robert De Niro Awakenings 1991 Penny Marshall Robin Williams William Baldwin ReleasedIn Backdraft 1991 Ron Howard Robert De Niro Year Kurt Russell Cosmology 1994 Terry Harding Kevin Costner Dances with wolves 1990 Kevin Costner Mary McDonnell DirectedBy/Directs Movie Person StaredBy/ PalGov © 2011 8
- 9. Object-Role Modeling (ORM) • ORM is conceptual modeling language. • ORM has an expressive graphical notation. • ORM is designed for modeling DB schemes at the conceptual level. You build an ORM schema and then click a bottom to automatically generate a database. ReleasedIn Year DirectedBy/Directs Movie Person StaredBy/ Conceptual Level Logical Level Our goal in this course is to use ORM as general Conceptual Modeling language, rather than as database modeling language. ORM can be used for modeling business rules, ontology, XML schemes, and others. PalGov © 2011 9
- 10. ORM Usage Scenarios Originally Database Later Ontology Requirements Record XML Schema Warehouse Engineering my recipes ! Business Rules Web (x)Forms PalGov © 2011 10
- 11. Object-Role Modeling (ORM): Other Examples Has/Is-Of Title Book Witten-By/Writes Author PalGov © 2011 11
- 12. Object-Role Modeling (ORM): Other Examples Has/Is-Of Title 1 Databases Systems 2 Intro to Java Book Called Population Witten-By/Writes Author 1 J. Date 2 B. Hacker 2 A. Smith PalGov © 2011 12
- 13. Object-Role Modeling (ORM): Other Examples PalGov © 2011 13
- 14. Object-Role Modeling (ORM) constructs Called Object Type (or Concept, or Class) Relation Each part is called a Role Subtype relation PalGov © 2011 14
- 15. Object-Role Modeling (ORM) constructs Called Fact Type Each fact type should be elementary. PalGov © 2011 15
- 16. Object-Role Modeling (ORM) constraints Uniqueness Constraint: Each ISBN must Is-Of at most one Book Uniqueness Constraint: Each Book must has at most one ISBN Uniqueness Constraint: It is possible that a Book is Written-By more than one Author, and vice versa Mandatory Constraint: Each Book must has at Least one ISBN © 2011 PalGov 16
- 17. eGov Ontology (using ORM) PalGov © 2011 17
- 18. Modeling Approaches (short discussion) Which is more intuitive for modelers? For domain experts? ER-model UML-model Nice for picturing to DB-schemes Close to the way programmers think ORM-model Suitable for general conceptual modeling, not only DB schemes PalGov © 2011 18
- 19. References 1. www.zinnar.pna.ps 2. Information Modeling and Relational Databases: From Conceptual Analysis to Logical Design, Terry Halpin (ISBN 1- 55860-672-6) – Chapter 1. PalGov © 2011 19