ocr ict for a2 © hodder education 2009 chapter 1 the systems cycle
TRANSCRIPT
OCR ICT for A2 © Hodder Education 2009
Chapter 1
The systems cycle
OCR ICT for A2 © Hodder Education 2009
Systems cycle
The stages of the system life cycleDefinition of the problem Investigation and analysisDesign ImplementationTestingDocumentationEvaluation and maintenance
OCR ICT for A2 © Hodder Education 2009
Systems cycle
Different approaches to investigating a systemQuestionnaires InterviewsMeetingsDocument analysisObservation
OCR ICT for A2 © Hodder Education 2009
Systems cycle
Software development methodologiesPrototypingRapid application development (RAD)
OCR ICT for A2 © Hodder Education 2009
Systems cycle
TestingPurpose of test dataThe importance of testing and test plans
OCR ICT for A2 © Hodder Education 2009
Systems cycle
Specifications createdRequirements specificationDesign specificationSystem specification
OCR ICT for A2 © Hodder Education 2009
Project management
Roles and responsibilitiesProject managerSystems analystSystems designerProgrammerTester
OCR ICT for A2 © Hodder Education 2009
Project management
Project planning toolsCritical path analysis (CPA)Gantt charts
OCR ICT for A2 © Hodder Education 2009
Process modelling
Modelling tools include:State transition diagrams (STDs)Entity-relationship diagrams (ERDs)Data flow diagrams (DFDs)Flowcharts