The Open University since 2006
Alternatively you can skip the navigation by pressing 'Enter'.
Exodus: Our Journey To Europe: EPISODE 3Friday, 29th July 2016 00:45 - BBC Two21 year old Alaigie is preparing to leave Gambia to travel “the back way” 6000 kilometres to Italy to find work. Read more: Exodus: Our Journey To Europe: EPISODE 3
More or Less: Waitrose, EU Ref, Antiques Roadshow and Computer Science and SocksFriday, 29th July 2016 16:30 - BBC Radio 4
More or Less: Waitrose, EU Ref, Antiques Roadshow and Computer Science and SocksSunday, 31st July 2016 20:00 - BBC Radio 4
Full Steam Ahead: Episode oneTuesday, 2nd August 2016 01:35 - BBC Two
Exodus: Our Journey To Europe: EPISODE 3Available until Sunday, 28th August 2016 01:4521 year old Alaigie is preparing to leave Gambia to travel “the back way” 6000 kilometres to Italy to find work. Read more: Exodus: Our Journey To Europe: EPISODE 3
Managing virtual project teamsMany projects are now ‘virtual’, i.e. some or all of the team are located remotely and may be... Try: Managing virtual project teams now
English: skills for learningEnglish: skills for learning, is a free course for anybody who is thinking of studying for a... Try: English: skills for learning now
Models are mechanisms for communication. This free course, Models and modelling, looks at what a model is and what the process of modelling is about. The techniques discussed here are applicable to a wide range of systems and have one thing in common: they are all commonly used diagramming techniques. The five techniques are: data flow diagrams, use case modelling, activity diagrams, entityrelationship diagrams and state machines.
After studying this course, you should be able to:
- explain why modelling plays a key role in eliciting requirements
- identify the different kinds of model used in eliciting requirements
- explain the need for modelling languages
- interpret a data flow diagram describing a simple process
- interpret a use case diagram describing a system's response to a business event.
- Current section: Introduction
- Learning outcomes
- 1 Models and modelling
- 2 Models
- 3 Modelling languages
- 4 Data flow diagrams
- 5 Four other diagramming techniques
- 6 Use cases and actvity diagrams
- 6.1 Use case modelling
- 6.2 Actors
- 6.3 Describing use cases
- 6.4 Scenarios
- 6.5 More about actors
- 6.6 Modelling the relationships between use cases
- 6.7 Stereotypes
- 6.8 Sharing behaviour between use cases
- 6.9 Alternatives to the main success scenario
- 6.10 To extend or include?
- 6.11 Issues with use cases
- 6.12 Self-assessment questions
- 6.13 Exercises
- 7 Modelling users' routines
- 8 Entity–relationship data modelling
- 9 An introduction to state machines
- 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!
Models and modelling
Models are mechanisms for communication. This course looks at what a model is and what the process of modelling is about. The techniques discussed here are applicable to a wide range of systems and have one thing in common: they are all commonly used diagramming techniques. The five techniques are: data flow diagrams, use case modelling, activity diagrams, entity–relationship diagrams and state machines.
This OpenLearn course provides a sample of postgraduate study in.
This free course includes adapted extracts from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Computing and ICT courses or view the range of currently available OU Computing and ICT courses.
Copyright & revisions
Originally published: Friday, 15th 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 (1.1 MB)
- PDF (2.1 MB)
- ePub 2.0 (808 KB)
- RSS (359 KB)
- HTML (1.2 MB)
- OUXML Package (43 KB)
- OUXML File (156 KB)
*Please note you will need an ePub and Mobi reader for these formats.