The Open University since 2006
Alternatively you can skip the navigation by pressing 'Enter'.
Full Steam Ahead: Episode sixSaturday, 27th August 2016 15:30 - BBC TwoThe final episode of Full Steam Ahead looks at how more free time and rail transport allowed Victorians to travel... Read more: Full Steam Ahead: Episode six
Life Story: Growing upMonday, 29th August 2016 22:00 - BBC Four
Full Steam Ahead: Episode fiveTuesday, 30th August 2016 00:40 - BBC Two
Hidden histories: Britain's oldest family businesses: Balson The ButcherTuesday, 30th August 2016 22:00 - BBC Four
Life Story: First stepsAvailable until Sunday, 25th September 2016 00:50Each generation's greatest challenge - to ensure the next generation thrives. Read more: Life Story: First steps
Hidden histories: Britain's oldest family businessesUncover the extraordinary history of three of Britain’s longest-running family businesses with... Watch now: Hidden histories: Britain's oldest family businesses
Full Steam AheadIt’s Full Steam Ahead for historians Ruth Goodman, Alex Langlands and Peter Ginn as they bring... Read more: Full Steam Ahead
Internet of everythingThe internet of everything (IoE) is the networked connection of people, process, data and things.... Try: Internet of everything now
Forensic psychologyIn this free course, Forensic psychology, you will discover how psychology can help obtain... Try: Forensic psychology now
How do you model a software system? This free course, Modelling object-oriented software an introduction, will help you to work through the processes necessary to produce a conceptual model, by analysing the requirements document to identify classes and associations appropriate for modelling the system domain, together with their respective attributes and multiplicities.
After studying this course, you should be able to:
- list the components that make up a conceptual model of a system domain, and describe briefly the form and purpose of each component
- explain why a conceptual model forms the basis for modelling the structure of the system, i.e. gives an initial structural model of the system
- use various techniques and guidelines to identify an appropriate set of classes and associations from a requirements document, including their attributes and multiplicities
- identify situations where a generalisation relationship between classes exists, and decide on appropriate parent and child classes, and their attributes and associations.
- identify and reason about derived attributes and associations.
- Current section: Introduction
- Learning outcomes
- 1 Introduction
- 2 Developing the conceptual model
- 3 Classes
- 3.1 Terminology and notation
- 3.2 Identifying classes and attributes
- 3.3 Identifying classes and attributes for the Hospital System
- 3.4 Generalisation relationships
- 3.5 Abstract classes
- 3.6 Class or attribute?
- 4 Associations
- 5 Modelling events
- 6 Invariants
- 6.1 What is an invariant?
- 6.2 Remaining invariants for the Hospital System
- 7 Derived attributes and associations
- 8 Conceptual models
- 9 Conclusion
- Keep on learning
Study this free course
Enrol to access the full course, get recognition for the skills you learn, track your progress and on completion gain a statement of participation to demonstrate your learning to others. Make your learning visible!
Modelling object-oriented software – an introduction
This material introduces the first steps in modelling a software system. Software development is made up of phases, which are often organised into cycles. The first of these phases is requirements specification. In this particular course you will explore how to analyse the requirements document (the output from the requirements specification phase) to arrive at an understanding of how the proposed software system will be structured.
This OpenLearn course is an adapted extract from the Open University course.
Copyright & revisions
Originally published: Friday, 29th July 2011
Last updated on: Monday, 22nd February 2016
- Creative-Commons: The Open University is proud to release this free course under a Creative Commons licence. However, any third-party materials featured within it are used with permission and are not ours to give away. These materials are not subject to the Creative Commons licence. See terms and conditions. Full details can be found in the Acknowledgements and our FAQs section.
- This site has Copy Reuse Tracking enabled - see our FAQs for more information.
If you enjoyed this, why not follow a feed to find out when we have new things like it? Choose an RSS feed from the list below. (Don't know what to do with RSS feeds?)
Remember, you can also make your own, personal feed by combining tags from around OpenLearn.
All our alternative formats are free for you to download, for more information about the different formats we offer please see our FAQs. The most frequently used are Word (for accessibility), PDF (for print) and ePub and Kindle to download to eReaders*.
- Word (2.4 MB)
- PDF (2.6 MB)
- ePub 3.0 (1.4 MB)
- ePub 2.0 (1.4 MB)
- Kindle (947 KB)
- RSS (894 KB)
- HTML (1.4 MB)
- SCORM (1.4 MB)
- OUXML Package (61 KB)
- OUXML File (449 KB)
- IMS Common cartridge
*Please note you will need an ePub and Mobi reader for these formats.