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Models and modelling

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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.

Having studied this unit 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;
  • interpret an activity diagram describing the activities that make up a business system;
  • interpret an entity–relationship diagram that describes the data involved in a business process;
  • interpret a state machine diagram that describes how a system responds to a sequence of events.

By: The Open University

  • Duration 14 hours
  • Updated Friday 26th September 2014
  • Advanced level
  • Posted under Computing and ICT
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Models and modelling

Introduction

Unit image

Models are mechanisms for communication. This unit 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 free course is an adapted extract relevant to The Open University course M883 Software requirements for business systems, which is no longer taught by the University. If you want to study formally with us, you may wish to explore other courses we offer in this subject area [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] .

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