Pal gov.tutorial1.session1 2.conceptualdatamodelingusingorm


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Pal gov.tutorial1.session1 2.conceptualdatamodelingusingorm

  1. 1. ‫أكاديمية الحكومة اإللكترونية الفلسطينية‬ The Palestinian eGovernment Academy www.egovacademy.psTutorial 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 Reviewed by Prof. Marco Ronchetti, Trento University, Italy PalGov © 2011 1
  2. 2. AboutThis tutorial is part of the PalGov project, funded by the TEMPUS IV program of theCommission of the European Communities, grant agreement 511159-TEMPUS-1-2010-1-PS-TEMPUS-JPHES. The project website: www.egovacademy.psProject 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, PalestineCoordinator:Dr. Mustafa JarrarBirzeit University, P.O.Box 14- Birzeit, PalestineTelfax:+972 2 2982935 mjarrar@birzeit.eduPalGov © 2011 2
  3. 3. © Copyright NotesEveryone is encouraged to use this material, or part of it, but should properlycite 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 anymeans, without prior written permission from the project, who have the fullcopyrights on the material. Attribution-NonCommercial-ShareAlike CC-BY-NC-SAThis license lets others remix, tweak, and build upon your work non-commercially, as long as they credit you and license their new creationsunder the identical terms. PalGov © 2011 3
  4. 4. Tutorial Map Intended Learning Objectives Topic TimeModule 1 (Conceptual Date Modeling) Module I: Conceptual Data ModelingA: Knowledge and Understanding11a1: Demonstrate knowledge of conceptual modeling notations and concepts Session 0: Outline and Introduction11a2: Demonstrate knowledge of Object Role Modeling (ORM) methodology. Session 1.1: Information Modeling 111a3: Explain and demonstrate the concepts of data integrity & business rules Session 1.2: Conceptual Data Modeling using ORM 1B: Intellectual Skills Session 1.3: Conceptual Analyses 111b1: Analyze application and domain requirements at the conceptual level, Session 2: Lab- Conceptual Analyses 3and formalize it using ORM. Session 3.1: Uniqueness Rules 1.511b2: Analyze entity identity at the application and domain levels. Session 3.2: Mandatory Rules 1.511b4: Optimize, transform, and (re)engineer conceptual models. Session 4: Lab- Uniqueness & Mandatory Rules 311b5: Detect &resolve contradictions & implications at the conceptual level. Session 5: Subtypes and Other Rules 3C: Professional and Practical Skills Session 6: Lab- Subtypes and Other Rules 311c1: Using ORM modeling tools (Conceptual Modeling Tools). Session 7.1: Schema Equivalence &Optimization 1.5Module 2 (Business Process Modeling) Session 7.2: Rules Check &Schema Engineering 1.5A: Knowledge and Understanding Session 8: Lab- National Student Registry 312a1: Demonstrate knowledge of business process modeling notations and concepts. Module II: Business Process Modeling12a2: 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 3B: Intellectual Skills Session 10: Lab - BP Management 312b1: Identify business processes. Session 11: BPMN Fundamentals 312b2: Model and map business processes. Session 12: Lab - BPMN Fundamentals 312b3: Optimize and re-engineer business processes. Session 13: Modeling with BPMN 3C: Professional and Practical Skills Session 14: Lab- Modeling with BPMN 312c1: 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. 5. Session ILOsAfter 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. 6. Remark: this tutorial is about Object-Role Modeling (ORM),Not Object-Relational Mapping (ORM) PalGov © 2011 6
  7. 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. 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/DirectsMovie Person StaredBy/ PalGov © 2011 8
  9. 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. 10. ORM Usage Scenarios Originally Database Later Ontology Requirements RecordXML Schema Warehouse Engineering my recipes ! Business Rules Web (x)Forms PalGov © 2011 10
  11. 11. Object-Role Modeling (ORM): Other Examples Has/Is-Of TitleBook Witten-By/Writes Author PalGov © 2011 11
  12. 12. Object-Role Modeling (ORM): Other Examples Has/Is-Of Title 1 Databases Systems 2 Intro to JavaBook Called Population Witten-By/Writes Author 1 J. Date 2 B. Hacker 2 A. Smith PalGov © 2011 12
  13. 13. Object-Role Modeling (ORM): Other Examples PalGov © 2011 13
  14. 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. 15. Object-Role Modeling (ORM) constructs Called Fact Type Each fact type should be elementary. PalGov © 2011 15
  16. 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. 17. eGov Ontology (using ORM) PalGov © 2011 17
  18. 18. Modeling Approaches (short discussion) Which is more intuitive for modelers? For domain experts? ER-model UML-modelNice 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. 19. References1. www.zinnar.pna.ps2. Information Modeling and Relational Databases: From Conceptual Analysis to Logical Design, Terry Halpin (ISBN 1- 55860-672-6) – Chapter 1. PalGov © 2011 19