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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Derive high-level design from specification
   • Develop static class diagram from given set of specifications
   • Develop either collaboration diagram or sequence diagram from given set of specifications
   • Develop either activity diagram or state diagram from given set of specifications
2. Refine design
   • Investigate and refine behaviour, state of classes and collaboration between classes
   • Validate correct visibility of class services and state data
   • Identify generalisations within classes
   • Identify specialisations within classes
   • Apply principles of aggregation and composition to refine class design
3. Document design
   • Create detailed uniform modelling language (UML) static class diagrams
   • Create detailed UML collaboration or sequence diagrams
   • Create detailed UML activity or state diagrams

Performance Evidence

Evidence of the ability to:

produce an object-oriented design from requirements, documents or system specifications, including:

static class diagrams

collaboration or sequence diagrams

activity or state diagrams

refine the design

document the design.

Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.

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Knowledge Evidence

To complete the unit requirements safely and effectively, the individual must:

explain design quality metrics such as coupling and cohesion

explain design refinement techniques

describe programming design principles

describe different programming methodologies

outline various developmental life cycle options.

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